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 A344267 #5 May 14 2021 06:26:55
%S A344267 1,4,16,70,256,1088,4096,16644,65656,263168,1048576,4199520,16777216,
%T A344267 67125248,268439552,1073809761,4294967296,17180148192,68719476736,
%U A344267 274878973440,1099511693312,4398050705408,17592186044416,70368761292864,281474976743296,1125899973951488,4503599628419632
%N A344267 Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^(4^(k-1)).
%Y A344267 Cf. A045778, A050368, A344248, A344265, A344266, A344268, A344269, A344270, A344271.
%K A344267 nonn
%O A344267 1,2
%A A344267 _Ilya Gutkovskiy_, May 13 2021