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A007888 Euler characteristic of mapping class group Gamma_n. +0
1
1, 1, 3, 2, 3, 4, 1, -6, 45, -86, 173, -100, 2641, -48311, 717766 (list; graph; listen)
OFFSET

1,3

REFERENCES

Harer, J., The cohomology of the moduli space of curves, Lecture Notes in Math., Vol. 1337, Springer-Verlag, NY, pp. 138-221

CROSSREFS

Adjacent sequences: A007885 A007886 A007887 this_sequence A007889 A007890 A007891

Sequence in context: A089319 A117231 A106151 this_sequence A077178 A028292 A093407

KEYWORD

sign

AUTHOR

Mira Bernstein (mira(AT)math.berkeley.edu)

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.


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