Problem 52968. Easy Sequences 43: Least Common Fibonacci Number
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GeeTwo
on 7 Dec 2022
That's not really a standard way to number F(n), (usually F(0):==0 and F(1):==1) but OK...
James
on 2 Jun 2023
It's numbered like that because the lowest Fibonacci number divisible by F(a) and F(b) in the normal numbering system is F(lcm(a,b)). In the example here, you need to add one to everything to get that to work: lcm((3+1),(4+1)) = (19+1)
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