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A010368
Number of points of L1 norm 2n in Hamming code version of E_8 lattice.
2
1, 16, 352, 3376, 19648, 82256, 273440, 767600, 1894784, 4228752, 8703712, 16763824, 30549568, 53125072, 88750496, 143203568, 224154368, 341597456, 508345440, 740588080, 1058521024, 1487048272
OFFSET
0,2
LINKS
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).
MAPLE
series(((1+x)^8+224*x^2*(1+x)^4+256*x^4)/(1-x)^8, x, 40);
CROSSREFS
Cf. A010369.
Sequence in context: A221577 A363383 A136269 * A053103 A223032 A171680
KEYWORD
nonn
STATUS
approved