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A008650 Molien series of 4 X 4 upper triangular matrices over GF( 3 ). +0
2
1, 1, 1, 2, 2, 2, 3, 3, 3, 5, 5, 5, 7, 7, 7, 9, 9, 9, 12, 12, 12, 15, 15, 15, 18, 18, 18, 23, 23, 23, 28, 28, 28, 33, 33, 33, 40, 40, 40, 47, 47, 47, 54, 54, 54, 63, 63, 63, 72, 72, 72, 81, 81, 81, 93, 93, 93, 105, 105 (list; graph; listen)
OFFSET

0,4

REFERENCES

D. J. Benson, Polynomial Invariants of Finite Groups, Cambridge, 1993, p. 105.

LINKS

INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 235

Index entries for Molien series

MAPLE

1/(1-x)/(1-x^3)/(1-x^9)/(1-x^27)

CROSSREFS

Adjacent sequences: A008647 A008648 A008649 this_sequence A008651 A008652 A008653

Sequence in context: A032562 A076973 A008649 this_sequence A062051 A108711 A029059

KEYWORD

nonn,easy

AUTHOR

njas

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.


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