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A054722
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Triangle of coefficients of polynomials arising in enumeration of periodic sequences.
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0
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1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 2, 5, 3, 1, 1, 3, 13, 18, 7, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,8
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REFERENCES
| E. N. Gilbert and J. Riordan, Symmetry types of periodic sequences, Illinois J. Math., 5 (1961), 657-665.
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EXAMPLE
| 1; 1,1; 1,1,1; 1,2,3,1; ...
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CROSSREFS
| Sequence in context: A123338 A152735 A046226 * A067627 A077233 A178795
Adjacent sequences: A054719 A054720 A054721 * A054723 A054724 A054725
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KEYWORD
| nonn,tabl
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Apr 20 2000
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