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 A010368 #15 Sep 03 2023 15:53:27 %S A010368 1,16,352,3376,19648,82256,273440,767600,1894784,4228752,8703712, %T A010368 16763824,30549568,53125072,88750496,143203568,224154368,341597456, %U A010368 508345440,740588080,1058521024,1487048272 %N A010368 Number of points of L1 norm 2n in Hamming code version of E_8 lattice. %H A010368 Ray Chandler, <a href="/A010368/b010368.txt">Table of n, a(n) for n = 0..1000</a> %H A010368 P. Solé, <a href="https://doi.org/10.1016/0012-365X(94)00142-6">Counting lattice points in pyramids</a>, Discr. Math. 139 (1995), 381-392. %H A010368 <a href="/index/Rec#order_08">Index entries for linear recurrences with constant coefficients</a>, signature (8, -28, 56, -70, 56, -28, 8, -1). %p A010368 series(((1+x)^8+224*x^2*(1+x)^4+256*x^4)/(1-x)^8,x,40); %Y A010368 Cf. A010369. %K A010368 nonn %O A010368 0,2 %A A010368 _N. J. A. Sloane_, _Simon Plouffe_