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 A320729 #15 Feb 16 2025 08:33:56 %S A320729 0,4320,61440,-8810640,-263208960,22737197280,1104970014720, %T A320729 -61319781714960,-4559126871265280,157589681950830816, %U A320729 18460588655551795200,-337394373951169867920,-73200715363477357608960,306095068890572836888800,283363485933298319434493952,2600519516007145850005282800 %N A320729 Inverse Euler transform of A008409. %C A320729 a(n) is a multiple of 16. %H A320729 Seiichi Manyama, <a href="/A320729/b320729.txt">Table of n, a(n) for n = 1..549</a> %H A320729 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a> %H A320729 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Barnes-WallLattice.html">Barnes-Wall Lattice</a> %e A320729 1 + 4320*q^2 + 61440*q^3 + 522720*q^4 + ... = (1-q^2)^(-4320) * (1-q^3)^(-61440) * (1-q^4)^8810640 * ... . %Y A320729 Cf. A008409, A108094. %K A320729 sign %O A320729 1,2 %A A320729 _Seiichi Manyama_, Oct 20 2018