A010368 Number of points of L1 norm 2n in Hamming code version of E_8 lattice.

1, 16, 352, 3376, 19648, 82256, 273440, 767600, 1894784, 4228752, 8703712, 16763824, 30549568, 53125072, 88750496, 143203568, 224154368, 341597456, 508345440, 740588080, 1058521024, 1487048272

Offset: 0

Author

N. J. A. Sloane, Simon Plouffe

Keywords

• nonn

Links

• Ray Chandler, Table of n, a(n) for n = 0..1000
• P. Solé, Counting lattice points in pyramids, Discr. Math. 139 (1995), 381-392.
• Index entries for linear recurrences with constant coefficients, signature (8, -28, 56, -70, 56, -28, 8, -1).

Crossrefs

Cf. A010369.

Programs

Maple

series(((1+x)^8+224*x^2*(1+x)^4+256*x^4)/(1-x)^8,x,40);