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A035860
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Coordination sequence for A_34 lattice.
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0
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1, 1190, 354620, 47203730, 3563792960, 174181206542, 5997990984020, 154390001870810, 3103724917721540, 50409189277349630, 679545855082425212, 7772608216802526650
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OFFSET
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0,2
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REFERENCES
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R. Bacher, P. de la Harpe and B. Venkov, Series de croissance et series d'Ehrhart associees aux reseaux de racines, C. R. Acad. Sci. Paris, 325 (Series 1) (1997), 1137-1142.
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..11.
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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FORMULA
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Sum_{d=1}^34 C(35, d) C(m/2-1, d-1) C(34-d+m/2, m/2), where norm m is always even
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CROSSREFS
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Sequence in context: A153378 A205230 A158735 * A040104 A103171 A032530
Adjacent sequences: A035857 A035858 A035859 * A035861 A035862 A035863
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KEYWORD
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nonn,easy
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AUTHOR
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Serra-Sagrista, Joan; jserra(AT)ccd.uab.es
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STATUS
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approved
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