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A008803 Molien series for group [2,10]+ = 2 2 10. 0
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 7, 1, 9, 2, 11, 3, 13, 4, 15, 5, 18, 7, 21, 9, 24, 11, 27, 13, 30, 15, 34, 18, 38, 21, 42, 24, 46, 27, 50, 30, 55, 34, 60, 38, 65, 42, 70, 46, 75, 50, 81, 55, 87, 60, 93, 65, 99, 70, 105, 75, 112, 81, 119, 87, 126, 93, 133, 99, 140, 105, 148, 112, 156, 119, 164 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..74.

Index entries for Molien series

Index entries for linear recurrences with constant coefficients, signature (1,1,-1,0,0,0,0,0,0,1,-1,-1,1).

FORMULA

G.f.: (1+x^11)/((1-x^2)^2*(1-x^10)) (from MAPLE line).

a(n) = floor((11*(2*n+3)*(-1)^n+2*n^2+6*n+79)/80). - Tani Akinari, Jul 25 2013

G.f.: ( -1-x^2-x^4-x^6-x^8-x^10+x+x^3+x^5+x^7+x^9 ) / ( (x^4-x^3+x^2-x+1) *(1+x+x^2+x^3+x^4) *(1+x)^2 *(x-1)^3 ). - R. J. Mathar, Dec 18 2014

MAPLE

(1+x^11)/(1-x^2)^2/(1-x^10)

MATHEMATICA

LinearRecurrence[{1, 1, -1, 0, 0, 0, 0, 0, 0, 1, -1, -1, 1}, {1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 7, 1, 9}, 75]

(* Ray Chandler, Jul 15 2015 *)

CROSSREFS

Sequence in context: A135472 A008723 A263397 * A008722 A008736 A263396

Adjacent sequences:  A008800 A008801 A008802 * A008804 A008805 A008806

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 16 12:48 EST 2019. Contains 320163 sequences. (Running on oeis4.)