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 A292140 #19 Feb 16 2025 08:33:51 %S A292140 -2,-2,-2,6,6,14,22,30,38,54,30,46,30,14,-34,-74,-154,-226,-362,-498, %T A292140 -698,-762,-1058,-1218,-1474,-1634,-1890,-1914,-2074,-2002,-1962, %U A292140 -1570,-1210,-266,606,2190,3454,6030,8382,11926,15334,20190,24758,30990,36678,44134 %N A292140 G.f.: Im((2*i; x)_oo), where (a; q)_oo is the q-Pochhammer symbol, i = sqrt(-1). %H A292140 Seiichi Manyama, <a href="/A292140/b292140.txt">Table of n, a(n) for n = 0..10000</a> %H A292140 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/q-PochhammerSymbol.html">q-Pochhammer Symbol</a>. %F A292140 (2*i; x)_oo is the g.f. for A292135(n) + i*a(n). %Y A292140 Column k=2 of A292160. %Y A292140 Cf. A278400, A292135, A292141. %K A292140 sign %O A292140 0,1 %A A292140 _Seiichi Manyama_, Sep 09 2017