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 A056950 #8 May 18 2022 21:30:43
%S A056950 1,0,0,18,226,0,0,30800,128172,0,0,3697062,9189144,0,0,95514672,
%T A056950 188176158,0,0,1143458294,1959992760,0,0,8506375824,13292036472,0,0,
%U A056950 45760253096,67075640896,0,0,195396517152,272568595860,0,0
%N A056950 Jacobi form of weight 12 and index 1 associated with a nonexistent Niemeier lattice of Coxeter number 11.
%C A056950 a(n)>=0, for n<1000.
%D A056950 Eichler and Zagier, The Theory of Jacobi Forms, Birkhauser 1985.
%F A056950 E_8 * E_{4, 1} + (2*h - 60) * E_{12, 1} where h = 11.
%F A056950 a(n) = A055747(n) - 38*A003785(n). - _Sean A. Irvine_, May 18 2022
%Y A056950 Cf. A003785, A055747, A056945.
%K A056950 nonn
%O A056950 0,4
%A A056950 Kok Seng Chua (chuaks(AT)ihpc.nus.edu.sg), Jul 18 2000