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A035817
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Coordination sequence for lattice D*_64 (with edges defined by l_1 norm = 1).
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0
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1, 128, 8192, 349568, 11190272, 286680704, 6123315200, 112173964160, 1799375912960, 25678370512000, 330122643283968, 3862436697723264, 41474426978451456, 411631804378210944, 3799040291725172736
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listen;
history;
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internal format)
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OFFSET
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0,2
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REFERENCES
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J. Serra-Sagrista, Enumeration of lattice points in l_1 norm, Information Processing Letters, 76, no. 1-2 (2000), 39-44.
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LINKS
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Table of n, a(n) for n=0..14.
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FORMULA
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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=64.
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CROSSREFS
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Sequence in context: A232995 A283281 A181242 * A297373 A283697 A283129
Adjacent sequences: A035814 A035815 A035816 * A035818 A035819 A035820
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane, J. Serra-Sagrista (jserra(AT)ccd.uab.es)
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STATUS
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approved
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