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 A357375 #9 Jun 29 2025 02:24:16
%S A357375 1,0,0,0,0,1,0,0,0,1,0,1,0,1,1,0,0,1,0,1,1,1,0,1,0,1,0,1,0,0,0,0,1,1,
%T A357375 1,2,0,1,1,1,0,0,0,1,1,1,0,1,0,1,1,1,0,1,1,1,1,1,0,2,0,1,1,0,1,0,0,1,
%U A357375 1,0,0,3,0,1,1,1,1,0,0,1,0,1,0,2,1,1,1,1,0,2
%N A357375 Number of ordered factorizations of n into numbers > 1 with an even number of distinct prime divisors.
%H A357375 Amiram Eldar, <a href="/A357375/b357375.txt">Table of n, a(n) for n = 1..10000</a>
%t A357375 f[n_] := Boole[EvenQ[PrimeNu[n]]]; a[1] = 1; a[n_] := a[n] = Sum[If[d < n, f[n/d] a[d], 0], {d, Divisors[n]}]; Table[a[n], {n, 1, 90}]
%Y A357375 Cf. A030231, A050334, A074206, A308063, A357374.
%K A357375 nonn
%O A357375 1,36
%A A357375 _Ilya Gutkovskiy_, Sep 25 2022