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 A344248 #5 May 13 2021 13:48:28
%S A344248 1,4,16,74,256,1088,4096,16660,65672,263168,1048576,4199584,16777216,
%T A344248 67125248,268439552,1073810115,4294967296,17180148256,68719476736,
%U A344248 274878974464,1099511693312,4398050705408,17592186044416,70368761297216,281474976743552,1125899973951488,4503599628419888
%N A344248 Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^(4^(k-1)).
%Y A344248 Cf. A001055, A050367, A329800, A344247, A344249, A344250, A344251, A344252, A344253.
%K A344248 nonn
%O A344248 1,2
%A A344248 _Ilya Gutkovskiy_, May 12 2021