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A035919
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Coordination sequence for diamond structure D^+_86. (Edges defined by l_1 norm = 1.)
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0
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1, 14792, 36477072, 36010162520, 19069940181280, 6295606113770728, 1420507268612532656, 233146706655610223736, 29119100331561118798400, 2863789159379953441861640, 227816193344959389026441936
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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..10.
J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (Abstract, pdf, ps).
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MAPLE
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f := proc(m) local k, t1; t1 := 2^(n-1)*binomial((n+2*m)/2-1, n-1); if m mod 2 = 0 then t1 := t1+add(2^k*binomial(n, k)*binomial(m-1, k-1), k=0..n); fi; t1; end; where n=86.
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CROSSREFS
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Sequence in context: A202314 A015375 A043648 * A186790 A177412 A209947
Adjacent sequences: A035916 A035917 A035918 * A035920 A035921 A035922
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KEYWORD
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nonn
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AUTHOR
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J. Serra-Sagrista (jserra(AT)ccd.uab.es) Recomputed by N. J. A. Sloane Nov 27 1998.
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STATUS
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approved
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