Starting from 440Hz note (musical note A above middle C), create 13 notes, using twelve-tone equal temperament, in Herz units. https://en.wikipedia.org/wiki/Equal_temperament
Your output will be like [440, ... , 880] all rounded to integer.
Determine if a Given Number is a Triangle Number
2倍してみよう - ここからスタート！
ベクトル [1 2 3 4 5 6 7 8 9 10] の作成
Check that number is whole number
Replace Negative(-) by 0 and positive by 1
Number of paths on a 3d grid
Make a rainbow matrix (follow-up to checkerboard matrix)
The number of trailing zero digit of a factorial
Number of even divisors of a given number
The last non-zero digit of a factorial
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