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Search: id:A019562
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| A019562 |
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Coordination sequence for C_6 lattice. |
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+0
2
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| 1, 72, 912, 5336, 20256, 58728, 142000, 301560, 581184, 1038984, 1749456, 2805528, 4320608, 6430632, 9296112, 13104184, 18070656, 24442056, 32497680, 42551640, 54954912, 70097384, 88409904
(list; graph; listen)
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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+66*x+495*x^2+924*x^3+495*x^4+66*x^5+x^6)/(1-x)^6.
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CROSSREFS
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Sequence in context: A086579 A113855 A082949 this_sequence A008399 A022148 A064567
Adjacent sequences: A019559 A019560 A019561 this_sequence A019563 A019564 A019565
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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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