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A134241
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8*(n-1)*(n-2)*(n-3)*(6*n^2-37*n+60).
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0
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0, 0, 0, 384, 4800, 25920, 91200, 248640, 572544, 1169280, 2183040, 3801600, 6262080, 9856704, 14938560, 21927360, 31315200, 43672320, 59652864, 80000640, 105554880, 137256000, 176151360, 223401024, 280283520, 348201600, 428688000, 523411200
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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REFERENCES
| Zvonkine D., Counting ramified coverings and intersection theory on Hurwitz spaces II (local structure of Hurwitz spaces and combinatorial results). Moscow Mathematical Journal, vol. 7 (2007), no. 1, 135-162.
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LINKS
| D. Zvonkine, Home Page
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FORMULA
| O.g.f.: 192*x^4*(3*x+2)*(5*x+1)/(-1+x)^6 . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 01 2008
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CROSSREFS
| Sequence in context: A179664 A134175 A183686 * A203980 A061403 A128967
Adjacent sequences: A134238 A134239 A134240 * A134242 A134243 A134244
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jan 30 2008
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