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Search: id:A031362
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| A031362 |
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Number of coincidence site modules of index 10n+1 with 10-fold symmetry in plane. |
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+0
1
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| 1, 4, 0, 4, 4, 0, 4, 4, 0, 0, 4, 0, 8, 4, 0, 4, 0, 0, 4
(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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FORMULA
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Dirichlet series: Product ((1+p^(-s))/(1-p^(-s)))^2 (p=1 mod 5).
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CROSSREFS
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Sequence in context: A016680 A062524 A152856 this_sequence A110854 A021716 A134944
Adjacent sequences: A031359 A031360 A031361 this_sequence A031363 A031364 A031365
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KEYWORD
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nonn,easy,more
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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