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Search: id:A019561
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A019561 Coordination sequence for C_5 lattice. +0
3
1, 50, 450, 1970, 5890, 14002, 28610, 52530, 89090, 142130, 216002, 315570, 446210, 613810, 824770, 1086002, 1404930, 1789490, 2248130, 2789810, 3424002, 4160690, 5010370, 5984050, 7093250, 8350002 (list; graph; listen)
OFFSET

0,2

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.

FORMULA

G.f.: (1+45*x+210*x^2+210*x^3+45*x^4+x^5)/(1-x)^5.

CROSSREFS

Sequence in context: A124809 A031420 A111341 this_sequence A128954 A022147 A052460

Adjacent sequences: A019558 A019559 A019560 this_sequence A019562 A019563 A019564

KEYWORD

nonn

AUTHOR

mbaake(AT)sunelc3.tphys.physik.uni-tuebingen.de (Michael Baake)

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Last modified December 4 12:27 EST 2008. Contains 151280 sequences.


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