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A054722 Triangle of coefficients of polynomials arising in enumeration of periodic sequences. 0
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; text; internal format)
OFFSET

0,8

REFERENCES

E. N. Gilbert and J. Riordan, Symmetry types of periodic sequences, Illinois J. Math., 5 (1961), 657-665.

LINKS

Table of n, a(n) for n=0..20.

EXAMPLE

1; 1,1; 1,1,1; 1,2,3,1; ...

CROSSREFS

Sequence in context: A299481 A304738 A046226 * A295260 A256187 A308297

Adjacent sequences:  A054719 A054720 A054721 * A054723 A054724 A054725

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane, Apr 20 2000

STATUS

approved

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Last modified February 20 04:29 EST 2020. Contains 332063 sequences. (Running on oeis4.)