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 A305698 #16 Feb 16 2025 08:33:54
%S A305698 1,0,-98442,-10746880,14104091061,3163710154752,-2084259398665810,
%T A305698 -764175960909112320,294840080134539846210,168738710694984764315648,
%U A305698 -36893258480144387666915136,-35102639613834243676336481280
%N A305698 Coefficients of (q*(j(q)-744))^(-1/2) where j(q) is the elliptic modular invariant.
%H A305698 Seiichi Manyama, <a href="/A305698/b305698.txt">Table of n, a(n) for n = 0..377</a>
%H A305698 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/j-Function.html">j-Function</a>
%t A305698 CoefficientList[Series[((2^16 + x*QPochhammer[-1, x]^24)^3/(2*QPochhammer[-1, x])^24 - 744*x)^(-1/2), {x, 0, 15}], x] (* _Vaclav Kotesovec_, Jun 09 2018 *)
%Y A305698 (q*(j(q)-744))^(k/4): A305699 (k=-4), this sequence (k=-2), A305696 (k=-1), A304020 (k=1), A305697 (k=2).
%Y A305698 Cf. A000521 (j), A014708 (j-744).
%K A305698 sign
%O A305698 0,3
%A A305698 _Seiichi Manyama_, Jun 08 2018