A108034 n!*(9*n^4-78*n^3+235*n^2-438*n+680)/72.

0, 400, 13280, 278880, 5120640, 90518400, 1602720000, 28966291200, 539568691200, 10411578777600, 208646710272000, 4347290787840000, 94201374339072000, 2122386883448832000, 49691667829579776000, 1208138588893716480000, 30476152489092710400000, 796939223079733493760000

Offset

4,2

References

J. W. Moon, Topics on Tournaments. Holt, NY, 1968, p. 21.

Links

Table of n, a(n) for n=4..21.

Crossrefs

Sequence in context: A281808 A192076 A006764 * A187051 A231288 A210262

Adjacent sequences: A108031 A108032 A108033 * A108035 A108036 A108037

Keyword

nonn

Author

N. J. A. Sloane, Jun 01 2005

Status

approved