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 A348756 #5 Nov 01 2021 19:22:25
%S A348756 1,1,1,1,2,4,8,17,38,84,192,438,1024,2388,5678,13451,32354,77578,
%T A348756 188382,456006,1115966,2722174,6702450,16458698,40734862,100551658,
%U A348756 249995010,619974654,1547115954,3852068670,9644512918,24095760863,60506814284,151622914562
%N A348756 Product_{n>=1} (1 + a(n)*x^n) = 1 + x + x^2 + 2 * Sum_{n>=3} a(n)*x^n.
%Y A348756 Cf. A032305, A196545, A348755.
%K A348756 nonn
%O A348756 1,5
%A A348756 _Ilya Gutkovskiy_, Oct 31 2021