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A063814 Growth series for fundamental group of orientable closed surface of genus 4. 0
1, 16, 240, 3600, 54000, 810000, 12150000, 182250000, 2733749984, 41006249520, 615093739216, 9226406034480, 138396089710800, 2075941333566000, 31139119822050000, 467086794609150000, 7006301878313250240, 105094527562338760784, 1576417904249681573040 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

P. de la Harpe, Topics in Geometric Group Theory, Univ. Chicago Press, 2000, p. 160, Sigma(Gamma_4, S_4; z).

FORMULA

G.f.: (1+x)*(1-x^8)/(1-15*x+15*x^8-x^9).

CROSSREFS

Sequence in context: A163964 A164627 A164867 * A165308 A165876 A166410

Adjacent sequences:  A063811 A063812 A063813 * A063815 A063816 A063817

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Aug 21 2001

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Last modified February 15 05:15 EST 2012. Contains 205694 sequences.