|
%I #15 Sep 03 2023 15:53:27
%S 1,16,352,3376,19648,82256,273440,767600,1894784,4228752,8703712,
%T 16763824,30549568,53125072,88750496,143203568,224154368,341597456,
%U 508345440,740588080,1058521024,1487048272
%N Number of points of L1 norm 2n in Hamming code version of E_8 lattice.
%H Ray Chandler, <a href="/A010368/b010368.txt">Table of n, a(n) for n = 0..1000</a>
%H 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 <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 series(((1+x)^8+224*x^2*(1+x)^4+256*x^4)/(1-x)^8,x,40);
%Y Cf. A010369.
%K nonn
%O 0,2
%A _N. J. A. Sloane_, _Simon Plouffe_
|
