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A008644 Molien series of 5 X 5 upper triangular matrices over GF( 2 ). +0
1
1, 1, 2, 2, 4, 4, 6, 6, 10, 10, 14, 14, 20, 20, 26, 26, 36, 36, 46, 46, 60, 60, 74, 74, 94, 94, 114, 114, 140, 140, 166, 166, 201, 201, 236, 236, 280, 280, 324, 324, 380, 380, 436, 436, 504, 504, 572, 572 (list; graph; listen)
OFFSET

0,3

REFERENCES

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

LINKS

INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 243

Index entries for Molien series

MAPLE

1/(1-x)/(1-x^2)/(1-x^4)/(1-x^8)/(1-x^16)

CROSSREFS

Adjacent sequences: A008641 A008642 A008643 this_sequence A008645 A008646 A008647

Sequence in context: A029009 A023023 A008643 this_sequence A008645 A018819 A127370

KEYWORD

nonn,easy

AUTHOR

njas

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.


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