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A035825 Coordination sequence for lattice D*_80 (with edges defined by l_1 norm = 1). 0
1, 160, 12800, 682720, 27315200, 874496032, 23338104320, 534067024480, 10698844067840, 190617057780640, 3058431999744512, 44642243043558880, 597778600580572160, 7395049289720822560, 85027230683021319680 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

J. Serra-Sagrista, Enumeration of lattice points in l_1 norm, Information Processing Letters, 76, no. 1-2 (2000), 39-44.

LINKS

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

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=80.

CROSSREFS

Sequence in context: A168527 A185492 A233909 * A183769 A190937 A163056

Adjacent sequences:  A035822 A035823 A035824 * A035826 A035827 A035828

KEYWORD

nonn

AUTHOR

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

STATUS

approved

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Last modified June 22 03:15 EDT 2021. Contains 345367 sequences. (Running on oeis4.)