id:A008733 - OEIS Search Results

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Molien series for 3-dimensional group [2+,n ] = 2*(n/2).

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1, 0, 2, 1, 4, 2, 6, 4, 9, 6, 12, 9, 16, 12, 20, 16, 25, 20, 30, 25, 36, 30, 42, 36, 49, 42, 56, 49, 64, 56, 72, 64, 81, 72, 90, 81, 100, 90, 110, 100, 121, 110, 132, 121, 144, 132, 156, 144, 169, 156, 182 (list; graph; listen)

	OFFSET	`0,3`
	LINKS	`Index entries for Molien series`
	FORMULA	`a(n)=A005232(n)-A005232(n-1). G.f.: (1-x+x^2)/((1-x)^3(1+x)^2(1+x^2)). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 04 2008]`
	MAPLE	`(1+x^3)/(1-x^2)^2/(1-x^4)`
	CROSSREFS	`Sequence in context: A130107 A107130 A065423 this_sequence A154280 A004795 A161268` `Adjacent sequences: A008730 A008731 A008732 this_sequence A008734 A008735 A008736`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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