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Search: id:A019564
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| A019564 |
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Coordination sequence for C_8 lattice. |
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+0
2
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| 1, 128, 2816, 27008, 157184, 658048, 2187520, 6140800, 15158272, 33830016, 69629696, 134110592, 244396544, 425000576, 710003968, 1145628544, 1793234944, 2732779648, 4066763520, 5924704640
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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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FORMULA
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G.f.: (1+120*x+1820*x^2+8008*x^3+12870*x^4+8008*x^5+1820*x^6+120*x^7+x^8)/(1-x)^8.
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CROSSREFS
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Adjacent sequences: A019561 A019562 A019563 this_sequence A019565 A019566 A019567
Sequence in context: A092759 A056574 A096961 this_sequence A128802 A022150 A008791
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KEYWORD
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nonn
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AUTHOR
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mbaake(AT)sunelc3.tphys.physik.uni-tuebingen.de (Michael Baake)
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