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A035818 Coordination sequence for lattice D*_66 (with edges defined by l_1 norm = 1). 0
1, 132, 8712, 383372, 12655632, 334338708, 7363888664, 139100713884, 2300684695584, 33851564979364, 448681205484072, 5411871200791980, 59904484213281840, 612840192258608820, 5829554227763981880 (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=66.

CROSSREFS

Sequence in context: A270411 A258493 A184893 * A258394 A215546 A269042

Adjacent sequences:  A035815 A035816 A035817 * A035819 A035820 A035821

KEYWORD

nonn

AUTHOR

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

STATUS

approved

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Last modified March 6 02:27 EST 2021. Contains 341840 sequences. (Running on oeis4.)