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A008618 Expansion of 1/((1-x^2)(1-x^9)). 1
1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 4, 3, 4, 3, 4, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 4, 5, 4, 5, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,19
REFERENCES
D. J. Benson, Polynomial Invariants of Finite Groups, Cambridge, 1993, p. 100.
LINKS
D. J. Benson, Polynomial Invariants of Finite Groups, Cambridge, 1993, p. 100.
Index entries for linear recurrences with constant coefficients, signature (0, 1, 0, 0, 0, 0, 0, 0, 1, 0, -1).
FORMULA
a(n) = floor((2*n+27+9*(-1)^n)/36). - Tani Akinari, May 19 2014
MATHEMATICA
CoefficientList[Series[1 / ((1 - x^2) (1 - x^9)), {x, 0, 100}], x] (* Vincenzo Librandi, Jun 22 2013 *)
PROG
(PARI) a(n)=floor((2*n+27+9*(-1)^n)/36) \\ Tani Akinari, May 19 2014
CROSSREFS
Sequence in context: A298475 A175096 A111627 * A339368 A225572 A318471
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
Typo in name fixed by Vincenzo Librandi, Jun 22 2013
STATUS
approved

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Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)