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Search: id:A008376
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| A008376 |
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Coordination sequence for D_9 lattice. |
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+0
2
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| 1, 144, 4194, 50832, 361602, 1801872, 6976866, 22413456, 62407170, 155242640, 352624482, 743284368, 1471858818, 2764261008, 4960898658, 8559218832, 14267189250, 23069454480, 36308034146
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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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1006/315*n^8+488/15*n^6+1084/15*n^4+10712/315*n^2+2;
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CROSSREFS
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A row of array A103903.
Sequence in context: A075739 A074316 A128989 this_sequence A086985 A008662 A035821
Adjacent sequences: A008373 A008374 A008375 this_sequence A008377 A008378 A008379
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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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