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A007991 Poincaré series [or Poincare series] of Lie algebra associated with a certain braid group. 0
1, 2, 7, 18, 42, 88, 176, 324, 581, 984, 1631, 2594, 4055, 6140, 9164 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

REFERENCES

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.

LINKS

Table of n, a(n) for n=2..16.

S. P. Humphries, Home page

CROSSREFS

Sequence in context: A077802 A095151 A147611 * A037294 A076857 A243717

Adjacent sequences:  A007988 A007989 A007990 * A007992 A007993 A007994

KEYWORD

nonn

AUTHOR

Stephen P. Humphries

STATUS

approved

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Last modified December 16 04:05 EST 2019. Contains 330013 sequences. (Running on oeis4.)