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Search: id:A031360
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| A031360 |
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Number of coincidence site lattices of index 2n+1 in lattice D_4. |
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+0
1
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| 1, 16, 36, 64, 168, 144, 196, 576, 324, 400, 1024, 576
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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M. Baake, "Solution of coincidence problem...", in R. V. Moody, ed., Math. of Long-Range Aperiodic Order, Kluwer 1997, pp. 9-44.
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LINKS
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Index entries for sequences related to D_4 lattice
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FORMULA
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Dirichlet series: Product (1+p^(-s))*(1+p^(1-s))/((1-p^(1-s))*(1-p^(2-s))); p != 2.
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CROSSREFS
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Sequence in context: A144548 A161753 A062312 this_sequence A125240 A050775 A022040
Adjacent sequences: A031357 A031358 A031359 this_sequence A031361 A031362 A031363
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KEYWORD
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nonn,easy,nice,more
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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