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Search: id:A008489
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| A008489 |
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Expansion of (1-x^7)/(1-x)^7. |
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+0
1
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| 1, 7, 28, 84, 210, 462, 924, 1715, 2996, 4977, 7924, 12166, 18102, 26208, 37044, 51261, 69608, 92939, 122220, 158536, 203098, 257250, 322476, 400407, 492828, 601685, 729092, 877338, 1048894, 1246420
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Coordination sequence for 6-dimensional cyclotomic lattice Z[zeta_7].
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REFERENCES
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M. Beck and S. Hosten, Cyclotomic polytopes and growth series of cyclotomic lattices, arXiv math.CO/0508136.
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FORMULA
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Equals binomial transform of [1, 6, 15, 20, 15, 6, 1, -1, 1, -1, 1,...] - Gary W. Adamson (qntmpkt(AT)yahoo.com), Apr 29 2008
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CROSSREFS
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Sequence in context: A166322 A008499 A049018 this_sequence A023032 A000579 A049017
Adjacent sequences: A008486 A008487 A008488 this_sequence A008490 A008491 A008492
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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