A008666 - OEIS

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A008666

G.f.: 1/((1-x^2)(1-x^3)(1-x^5)(1-x^6)(1-x^9)).

1, 0, 1, 1, 1, 2, 3, 2, 4, 5, 5, 7, 9, 8, 12, 14, 14, 18, 22, 21, 28, 31, 32, 39, 45, 45, 55, 61, 63, 74, 83, 84, 99, 108, 112, 128, 141, 144, 165, 178, 185, 207, 225, 231, 259, 278, 288, 318, 342, 352, 389 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,6`
	COMMENTS	`Molien series for 5-dimensional complex reflection group of order 2^7.3^4.5 is 1/((1-x^4)(1-x^6)(1-x^10)(1-x^12)(1-x^18)).`
	REFERENCES	`L. Smith, Polynomial Invariants of Finite Groups, Peters, 1995, p. 199 (No. 33).`
	LINKS	`INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 247` `Index entries for Molien series`
	PROG	`(PARI) a(n)=polcoeff(1/((1-x^2)(1-x^3)(1-x^5)(1-x^6)(1-x^9))+x*O(x^n), n)`
	CROSSREFS	`Sequence in context: A174625 A178853 A120641 * A140503 A176789 A043263` `Adjacent sequences: A008663 A008664 A008665 * A008667 A008668 A008669`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.