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 A261977 #8 Sep 07 2015 09:00:21 %S A261977 1,-4,16,-48,112,-248,576,-1248,2272,-3988,8672,-18192,23616,-23000, %T A261977 100992,-304032,41152,970552,1972816,-11299824,-9904096,80729472, %U A261977 95978688,-676487328,-755649408,5483063076,6371808608,-45452602080,-53224627584,378628636264,449486486400,-3179963494272 %N A261977 Expansion of (elliptic_E / elliptic_K)^(1/2) in powers of q. %F A261977 See A261975 for the g.f. for E/K. %Y A261977 Cf. A261975 (E/K), A261978 ((E/K)^(1/4)). %Y A261977 Cf. A261976 (K/E), A261979 ((K/E)^(1/2)), A261980 ((K/E)^(1/4)). %Y A261977 Cf. A004018 (elliptic K(q)), A194094 (elliptic E(q)), A115977 (elliptic k(q)^2). %K A261977 sign %O A261977 0,2 %A A261977 _Joerg Arndt_, Sep 07 2015