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 A037149 #19 Jul 08 2025 22:03:18 %S A037149 1,1,691,53678953,53678953,53678953,53678953,53678953,53678953, %T A037149 53678953,53678953,53678953,53678953,53678953,53678953,53678953, %U A037149 53678953,53678953,53678953,53678953,53678953,53678953,53678953,53678953,53678953,53678953,53678953,53678953 %N A037149 Denominators of Fourier coefficients of Eisenstein series of degree 2 and weight 12 when evaluated at Gram(A_2)*z. %D A037149 Helmut Klingen, Introductory Lectures on Siegel Modular Forms, p. 123. %H A037149 N. J. A. Sloane, <a href="/A037150/a037150.pdf">Notes on Two-dimensional Theta Series of Lattices</a> (Notes on some joint work with Eric M. Rains), pages 96-115, circa Jun 08 1998, of N. J. A. Sloane's notebook "Lattices Volume 79". %H A037149 <a href="/index/Ed#Eisen">Index entries for sequences related to Eisenstein series</a> %F A037149 x^24 - 144*x^18*y + (3480192/691)*x^12*y^2 - (2037901234176/53678953)*x^6*y^3 + (21009383424000/53678953)*y^4, x = phi_0(z), y = Delta_12(z). See A037150 for definitions and Maple code. %Y A037149 Cf. A037148, A037150. %K A037149 nonn %O A037149 0,3 %A A037149 _N. J. A. Sloane_ %E A037149 More terms from _Sean A. Irvine_, Dec 13 2020