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 A358480 #8 Nov 18 2022 12:30:04 %S A358480 0,0,0,0,0,0,0,0,0,1,2,0,0,0,0,0,0,0,0,0,0,1,0,1,0,1,1,2,1,1,1,1,1,2, %T A358480 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, %U A358480 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2 %N A358480 Number of 7's that appeared in the n-th step when constructing A030717. %C A358480 Also first differences of A358475. %Y A358480 Cf. A358467, A358469, A358476, A358477, A358478, A358479. %Y A358480 Cf. A030717, A358425. %K A358480 nonn %O A358480 1,11 %A A358480 _Seiichi Manyama_, Nov 18 2022