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Search: id:A063815
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| A063815 |
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Growth series for fundamental group of orientable closed surface of genus 5. |
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+0
1
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| 1, 20, 380, 7220, 137180, 2606420, 49521980, 940917620, 17877434780, 339671260820, 6453753955560, 122621325155260, 2329805177942740, 44266298380775260, 841059669232130740, 15980133715361099260, 303622540590922574740
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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P. de la Harpe, Topics in Geometric Group Theory, Univ. Chicago Press, 2000, p. 160, Sigma(Gamma_5, S_5; z).
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FORMULA
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G.f.: (1+x)*(1-x^10)/(1-19*x+19*x^10-x^11).
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CROSSREFS
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Sequence in context: A019580 A084329 A097832 this_sequence A158534 A075843 A090051
Adjacent sequences: A063812 A063813 A063814 this_sequence A063816 A063817 A063818
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Aug 21 2001
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