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Search: id:A008796
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| A008796 |
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Molien series for 3-dimensional group [2,n ]+ = 22n; also for group H_{1,2} of order 384. |
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1
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| 1, 0, 2, 1, 4, 2, 7, 4, 10, 7, 14, 10, 19, 14, 24, 19, 30, 24, 37, 30, 44, 37, 52, 44, 61, 52, 70, 61, 80, 70, 91, 80, 102, 91, 114, 102, 127, 114, 140, 127, 154, 140, 169, 154, 184, 169, 200, 184, 217, 200, 234, 217
(list; graph; listen)
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OFFSET
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0,3
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LINKS
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Index entries for Molien series
E. Bannai, S. T. Dougherty, M. Harada and M. Oura, Type II Codes, Even Unimodular Lattices and Invariant Rings, IEEE Trans. Information Theory, Volume 45, Number 4, 1999, 1194-1205.
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MAPLE
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(1+x^4)/((1-x^2)^2*(1-x^3)).
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CROSSREFS
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Sequence in context: A007690 A143375 A074364 this_sequence A079966 A101707 A113418
Adjacent sequences: A008793 A008794 A008795 this_sequence A008797 A008798 A008799
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KEYWORD
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nonn,nice,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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