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Search: id:A008359
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| A008359 |
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Coordination sequence for D_7 lattice. |
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+0
2
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| 1, 84, 1498, 11620, 55650, 195972, 559258, 1371316, 2999682, 6003956, 11193882, 19695172, 33023074, 53163684, 82663002, 124723732, 183309826, 263258772, 370401626, 511690788, 695335522
(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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T. D. Noe, Table of n, a(n) for n=0..1000
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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484/45*n^6+392/9*n^4+1246/45*n^2+2;
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CROSSREFS
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A row of array A103903.
Sequence in context: A027821 A092719 A105942 this_sequence A098935 A104674 A140903
Adjacent sequences: A008356 A008357 A008358 this_sequence A008360 A008361 A008362
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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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