This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A359852 #12 Feb 16 2025 08:34:04
%S A359852 21,504,39648,6930,12669125245488,471771076278370,
%T A359852 32818036405994618064,71577732779401085355729600,
%U A359852 204945946670840805166309694624676331385919836360545974559162291811394735721440
%N A359852 a(n) is the smallest Fibonacci n-step number with exactly n distinct prime factors.
%H A359852 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/DistinctPrimeFactors.html">Distinct Prime Factors</a>
%H A359852 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Fibonaccin-StepNumber.html">Fibonacci n-Step Number</a>
%e A359852 a(3) = 504, because 504 is a tribonacci number with 3 distinct prime factors {2, 3, 7} and this is the smallest such number.
%o A359852 (PARI) a(n) = my(v=vector(n+1), x=1, y=n+1); v[1]=v[y]=1; while(omega(v[x])!=n, y=x; x=x%(n+1)+1; v[x]=2*v[y]-v[x]); v[x]; \\ _Jinyuan Wang_, Jan 16 2023
%Y A359852 Cf. A001221, A060319, A359848, A359849, A359853.
%K A359852 nonn
%O A359852 2,1
%A A359852 _Ilya Gutkovskiy_, Jan 15 2023
%E A359852 a(10) from _Jinyuan Wang_, Jan 16 2023