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 A037147 #21 Jul 08 2025 22:03:03 %S A037147 1,1,1,43867,43867,43867,43867,43867,43867,43867,43867,43867,43867, %T A037147 43867,43867,43867,43867,43867,43867,43867,43867,43867,43867,43867, %U A037147 43867,43867,43867,43867,43867,43867,43867,43867,43867,43867,43867,43867,43867,43867,43867 %N A037147 Denominators of Fourier coefficients of Eisenstein series of degree 2 and weight 10 when evaluated at Gram(A_2)*z. %D A037147 Helmut Klingen, Introductory Lectures on Siegel Modular Forms, p. 123. %H A037147 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 A037147 <a href="/index/Ed#Eisen">Index entries for sequences related to Eisenstein series</a> %F A037147 x^20 - 120*x^14*y + 1728*x^8*y^2 + (1330587648/43867)*x^2*y^3, x = phi_0(z), y = Delta_12(z). (See A037150 for explanation and Maple code. - _N. J. A. Sloane_, Dec 12 2020) %Y A037147 Cf. A037146, A037150. %K A037147 nonn,easy,frac %O A037147 0,4 %A A037147 _N. J. A. Sloane_ %E A037147 More terms from _Sean A. Irvine_, Dec 13 2020