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Search: id:A063817
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A063817 Growth series for fundamental group of orientable closed surface of genus 7. +0
1
1, 28, 756, 20412, 551124, 14880348, 401769396, 10847773692, 292889889684, 7908027021468, 213516729579636, 5764951698650172, 155653695863554644, 4202649788315975388, 113471544284531335448, 3063731695682346056340 (list; graph; listen)
OFFSET

0,2

REFERENCES

P. de la Harpe, Topics in Geometric Group Theory, Univ. Chicago Press, 2000, p. 160, Sigma(Gamma_7, S_7; z).

FORMULA

G.f.: (1+x)*(1-x^14)/(1-27*x+27*x^14-x^15).

CROSSREFS

Sequence in context: A004293 A012808 A097834 this_sequence A113532 A097311 A009972

Adjacent sequences: A063814 A063815 A063816 this_sequence A063818 A063819 A063820

KEYWORD

nonn

AUTHOR

njas, Aug 21 2001

page 1

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.


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