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A035812
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Coordination sequence for lattice D*_54 (with edges defined by l_1 norm = 1).
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0
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1, 108, 5832, 209988, 5672592, 122653980, 2211553368, 34208719092, 463476372768, 5588323254732, 60724672249320, 600778137474468, 5457607130811312, 45848471510756988, 358366157766535032
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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=54.
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CROSSREFS
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Sequence in context: A223153 A203028 A138784 * A054624 A147821 A269148
Adjacent sequences: A035809 A035810 A035811 * A035813 A035814 A035815
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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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