Problems

1 – 50 of 55

Problem Title Likes Solvers

Problem 44360. Pentagonal Numbers

Created by: goc3

Tags series, number, sequence

730

Problem 1655. sum of first 'n' terms

Created by: MKN

Tags sum, sequence, poor_problem_statement

333

Problem 1771. Polygonal numbers

Created by: Jan Orwat

Tags number theory, sequence, polygonal

Problem 44523. Pattern Sum

Created by: Dishant Varshney

Tags sequences, series, sum

Problem 3016. Twin Primes

Created by: goc3

Tags prime, integer, sequence

Problem 3001. Sphenic number sequence

Created by: goc3

Tags prime, number, factor

Problem 43684. 0, 2, 0, -2, 0, 2, 0, -2, ...

Created by: Peng Liu

Tags sequence, periodic

Problem 3003. Mobius function

Created by: goc3

Tags prime, number, factor

Problem 3010. Self-similarity 1 - Every other term

Created by: goc3

Tags integer, sequence, self

Problem 3002. Not square-free number sequence

Created by: goc3

Tags square, number, integer

Problem 44225. Sum of self power series

Created by: MathReallyWorks

Tags sequences, series, sum

Problem 42715. Throw common elements of two vector arrays in sorted manner

Created by: Azhar

Tags vectors, sorting, arrays

Problem 3011. Self-similarity 2 - Every third term

Created by: goc3

Tags integer, sequence, self

Problem 44732. Highly divisible triangular number (inspired by Project Euler 12)

Created by: goc3

Tags series, triangle, projecteuler

Problem 2672. Largest Geometric Series

Created by: rifat

Tags matrix manipulation, sequence, vectr

Problem 44818. Add consecutive integer numbers

Created by: GT

Tags sum, sequence

Problem 45223. find nth even fibonacci number

Created by: Asif Newaz

Tags series, number, fibonacci

Problem 42833. Return the sequence element I

Created by: HH

Tags numbers, sequence

Problem 2982. Get a Fibonacci number's index.

Created by: Jared Metzel

Tags fibonacci, index, sequence

Problem 45253. Pell numbers

Created by: Asif Newaz

Tags number, sequence, pell

Problem 44543. Normie Function

Created by: Naimul Hassan

Tags recursion, function, sequence

Problem 42836. Juggler sequence revisited

Created by: HH

Tags numbers, sequence, juggler

Problem 42647. Recursion - Fun

Created by: Manish Joshi

Tags easy, matrix, recursion

Problem 42841. Return the sequence element III

Created by: HH

Tags numbers, sequence, ulam

Problem 42835. Return the sequence element II

Created by: HH

Tags numbers, sequence, juggler

Problem 44544. Normie Function (2)

Created by: Naimul Hassan

Tags function, sequence, matrix exponential

Problem 42832. Segmented number sequence

Created by: HH

Tags numbers, sequence

Problem 45224. Wythoff Sequence

Created by: Asif Newaz

Tags number theory, sequence, oeis

Problem 42496. Arithmetic/geometric sequence, 50/50

Created by: Jan Orwat

Tags sequences, sequence

Problem 45384. Sum! Sum! Sum!

Created by: Asif Newaz

Tags series, sum, sequence

Problem 45255. Find the sequence

Created by: Asif Newaz

Tags easy, numbers, sequence

Problem 45272. Pseudo-vampire number

Created by: Asif Newaz

Tags numbers, number theory, sequence

Problem 45466. Fibonacci Word

Created by: Asif Newaz

Tags easy, string, fibonacci

Problem 45254. Tribonacci Sequence

Created by: Asif Newaz

Tags easy, number, sequence

Problem 1901. GJam 2014 China Rd A: Read Phone Number

Created by: Richard Zapor

Tags string, sequence, gjam

Problem 45231. Generate Golomb's sequence

Created by: Asif Newaz

Tags sequence, oeis, golomb

Problem 45383. $10,000 sequence

Created by: Asif Newaz

Tags easy, series, sequence

Problem 45367. Sieve of Eratosthenes - 02

Created by: Asif Newaz

Tags primes, sequence, algorithm

Problem 45423. Bernoulli's Triangle

Created by: Asif Newaz

Tags easy, sequence

Problem 45335. Take it out

Created by: Asif Newaz

Tags sequence

Problem 45344. lucky

Created by: Asif Newaz

Tags numbers, sequence, lucky

Problem 44784. Project Euler: Problem 14 Longest Collatz sequence(harder version)

Created by: Binbin Qi

Tags speed optimization, sequence, euler

Problem 45425. The Tortoise and the Hare - 01

Created by: Asif Newaz

Tags easy, sequence

Problem 45339. XOR fibonacci

Created by: Asif Newaz

Tags easy, series, fibonacci

Problem 45321. Kolakoski Sequence

Created by: Asif Newaz

Tags sequence, kolakoski

Problem 45343. How lucky r u ?

Created by: Asif Newaz

Tags number, sequence, lucky

Problem 45347. Cat's paw - 01

Created by: Asif Newaz

Tags string, sequence

1 – 50 of 55

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Problems

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