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A008648 Molien series of 3 X 3 upper triangular matrices over GF( 5 ). +0
3
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; listen)
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 this_sequence A154099 A105511 A027868

Adjacent sequences: A008645 A008646 A008647 this_sequence A008649 A008650 A008651

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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