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 A345137 #6 Jun 09 2021 11:14:26
%S A345137 1,1,0,1,1,2,1,2,1,3,1,3,1,5,1,3,2,5,1,5,1,7,2,3,1,10,2,3,2,9,1,9,1,8,
%T A345137 2,4,3,14,1,3,2,14,1,11,1,11,4,4,1,16,2,7,3,14,1,12,3,14,2,4,1,27,1,3,
%U A345137 4,17,3,13,1,13,3,14,1,23,1,5,4,18,3,16,1,20,4,4,1,32,4,3,3,24,1,25,3,16,2
%N A345137 a(1) = a(2) = 1; a(n+2) = Sum_{d|n, d < n} a(d).
%F A345137 G.f. A(x) satisfies: A(x) = x + x^2 * (1 + A(x^2) + A(x^3) + A(x^4) + ...).
%t A345137 a[1] = a[2] = 1; a[n_] := a[n] = Sum[If[d < n - 2, a[d], 0], {d, Divisors[n - 2]}]; Table[a[n], {n, 1, 95}]
%t A345137 nmax = 95; A[_] = 0; Do[A[x_] = x + x^2 (1 + Sum[A[x^k], {k, 2, nmax}]) + O[x]^(nmax + 1) // Normal, nmax + 1]; CoefficientList[A[x], x] // Rest
%Y A345137 Cf. A007439, A074206, A167865, A345138, A345141.
%K A345137 nonn
%O A345137 1,6
%A A345137 _Ilya Gutkovskiy_, Jun 09 2021