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A022147
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Coordination sequence for root lattice B_5.
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3
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1, 50, 530, 2562, 8130, 20082, 42130, 78850, 135682, 218930, 335762, 494210, 703170, 972402, 1312530, 1735042, 2252290, 2877490, 3624722, 4508930, 5545922, 6752370, 8145810, 9744642, 11568130, 13636402
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| 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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FORMULA
| a(0) = 1; for n>0, a(n) = (108*n^4 - 88*n^3 + 156*n^2 - 32*n + 6)/3 . - DELEHAM Philippe (kolotoko(AT)wanadoo.fr), Feb 20 2004
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CROSSREFS
| Sequence in context: A164757 A189415 A128954 * A187669 A160336 A156965
Adjacent sequences: A022144 A022145 A022146 * A022148 A022149 A022150
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KEYWORD
| nonn
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AUTHOR
| mbaake(AT)sunelc3.tphys.physik.uni-tuebingen.de (Michael Baake)
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