A035823 - OEIS

A035823

Coordination sequence for lattice D*_76 (with edges defined by l_1 norm = 1).

1, 152, 11552, 585352, 22249152, 676725432, 17158543712, 373068895912, 7101177930112, 120221169738712, 1833042722372512, 25427680393479112, 323611487252712512, 3805280811287736312, 41591858654483462112

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OFFSET

0,2

LINKS

Table of n, a(n) for n=0..14.

Joan Serra-Sagrista, Enumeration of lattice points in l_1 norm, Inf. Proc. Lett. 76 (1-2) (2000) 39-44.

FORMULA

a(m)=add(2^k*binomial(n, k)*binomial(m-1, k-1), k=0..n)+2^n*binomial((n+2*m)/2-1, n-1); with n=76.

CROSSREFS

Sequence in context: A223397 A239065 A229418 * A265861 A208484 A335091

Adjacent sequences: A035820 A035821 A035822 * A035824 A035825 A035826

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, J. Serra-Sagrista (jserra(AT)ccd.uab.es)

STATUS

approved