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 A034998 #6 Jul 08 2025 21:29:04 %S A034998 1,-8,36,-128,402,-1152,3064,-7680,18351,-42112,93300,-200448,419150, %T A034998 -855552,1708632,-3345408,6432867,-12166272,22659976,-41609856, %U A034998 75404754,-134973184,238825344,-418023936,724242492 %N A034998 Expansion of Product (1+q^(2k-1))^(-8)*(1+q^(4k))^(-8), k=1..inf. %Y A034998 Reciprocal of A007331. Cf. A002408. %K A034998 sign %O A034998 0,2 %A A034998 _N. J. A. Sloane_