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A019563
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Coordination sequence for C_7 lattice.
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1
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1, 98, 1666, 12642, 59906, 209762, 596610, 1459810, 3188738, 6376034, 11879042, 20889442, 35011074, 56345954, 87588482, 132127842, 194158594, 278799458, 392220290, 541777250, 736156162, 985524066
(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
| G.f.: (1+91*x+1001*x^2+3003*x^3+3003*x^4+1001*x^5+91*x^6+x^7)/(1-x)^7.
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CROSSREFS
| Sequence in context: A184608 A088736 A190636 * A197616 A022149 A128801
Adjacent sequences: A019560 A019561 A019562 * A019564 A019565 A019566
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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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