A008648 - OEIS

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A008648

Molien series of 3 X 3 upper triangular matrices over GF( 5 ).

1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11, 13, 13, 13, 13, 13, 15, 15, 15, 15, 15, 18, 18, 18, 18, 18, 21, 21, 21, 21, 21, 24, 24, 24, 24, 24 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,6`
	REFERENCES	`D. J. Benson, Polynomial Invariants of Finite Groups, Cambridge, 1993, p. 105.`
	LINKS	`INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 221` `Index entries for Molien series`
	FORMULA	`floor((n+4)/5), n>0.`
	MAPLE	`1/(1-x)/(1-x^5)/(1-x^25)`
	CROSSREFS	`Cf. A002266.` `Sequence in context: A105512 A002266 A075249 * A154099 A105511 A187183` `Adjacent sequences: A008645 A008646 A008647 * A008649 A008650 A008651`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 16 15:27 EST 2012. Contains 205930 sequences.