A359853 - OEIS

%I #11 Feb 16 2025 08:34:04

%S 8,13,20,18,50,56,73,95,267

%N a(n) is the index of the smallest Fibonacci n-step number with exactly n distinct prime factors.

%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/DistinctPrimeFactors.html">Distinct Prime Factors</a>

%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Fibonaccin-StepNumber.html">Fibonacci n-Step Number</a>

%Y Cf. A001221, A060320, A359850, A359851, A359852.

%K nonn,more

%O 2,1

%A _Ilya Gutkovskiy_, Jan 15 2023

%E a(10) from _Jinyuan Wang_, Jan 17 2023