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Search: id:A008355
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| A008355 |
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Coordination sequence for D_5 lattice. |
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+0
2
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| 1, 40, 370, 1640, 4930, 11752, 24050, 44200, 75010, 119720, 182002, 265960, 376130, 517480, 695410, 915752, 1184770, 1509160, 1896050, 2353000, 2888002, 3509480, 4226290, 5047720, 5983490, 7043752
(list; graph; listen)
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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.
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LINKS
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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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2*(9*n^2+1)*(n^2+1);
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CROSSREFS
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A row of array A103903.
Sequence in context: A065255 A061993 A087954 this_sequence A007772 A055750 A115189
Adjacent sequences: A008352 A008353 A008354 this_sequence A008356 A008357 A008358
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KEYWORD
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nonn
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AUTHOR
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njas and J. H. Conway (conway(AT)math.princeton.edu)
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