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A008798 Molien series for group [2,5]+ = 225. 1
1, 0, 2, 0, 3, 1, 5, 2, 7, 3, 10, 5, 13, 7, 16, 10, 20, 13, 24, 16, 29, 20, 34, 24, 39, 29, 45, 34, 51, 39, 58, 45, 65, 51, 72, 58, 80, 65, 88, 72, 97, 80, 106, 88, 115, 97, 125, 106, 135, 115, 146, 125, 157, 135, 168 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..54.

Index entries for Molien series

Index entries for linear recurrences with constant coefficients, signature (0,2,0,-1,1,0,-2,0,1).

FORMULA

G.f. (1+x^6)/(1-x^2)^2/(1-x^5).

a(n) = 17/40+3*n/20+n^2/20+(-1)^n*(3/8+n/4) +A080891(n+4)/5.

MAPLE

A080891 := proc(n) op((n mod 5)+1, [0, 1, -1, -1, 1]) ; end proc:

A008798 := proc(n) 17/40+3*n/20+n^2/20+(-1)^n*(3/8+n/4) +A080891(n+4)/5; end proc:

CROSSREFS

Sequence in context: A162170 A266770 A282892 * A005290 A326440 A166117

Adjacent sequences:  A008795 A008796 A008797 * A008799 A008800 A008801

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Definition clarified by N. J. A. Sloane, Feb 02 2018

STATUS

approved

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Last modified August 20 20:50 EDT 2019. Contains 326155 sequences. (Running on oeis4.)