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Search: id:A007994
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| A007994 |
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Poincare series of Lie algebra associated with a certain braid group. |
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+0
1
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| 4, 22, 110, 453, 1482, 4083, 9926, 21959, 45122, 87347, 160922, 284310, 484528, 800206, 1285462, 2014746, 3088824, 4642092, 6851430, 9946827, 14224030, 20059493, 27927926, 38422769, 52279942, 70405249, 93905842, 124126180
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The series in the Humphries paper has zeros interleaved.
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REFERENCES
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S. P. Humphries, Braid groups, infinite Lie algebras of Cartan type and rings of invariants, Topology and its Applications, 95 (3) (1999) pp. 173-205.
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LINKS
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S. P. Humphries, Home page
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FORMULA
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(1/362880) [n^9 + 36n^8 + 546n^7 + 4536n^6 + 19425n^5 + 37044n^4 - 592516n^3 - 41616n^2 + 7104384n - 9434880 ]. - Ralf Stephan (ralf(AT)ark.in-berlin.de), Jun 11 2005
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CROSSREFS
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Sequence in context: A001436 A024420 A108840 this_sequence A006651 A159616 A144047
Adjacent sequences: A007991 A007992 A007993 this_sequence A007995 A007996 A007997
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KEYWORD
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nonn
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AUTHOR
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Stephen P Humphries (steve(AT)math.byu.edu)
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EXTENSIONS
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More terms from Ralf Stephan (ralf(AT)ark.in-berlin.de), Jun 11 2005
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