A004246 Number of permutations of length n with spread 3.

8, 25, 144, 735, 4608, 39285, 362000, 3628185, 40808448, 478988081, 6227101888, 87248724750, 1300561920000, 20922788404479, 355587467242752, 6402373698206889, 121810906419200000

Offset: 4

Author

N. J. A. Sloane

Keywords

• nonn

Links

• R. L. Graham, and D. H. Lehmer, On the Permanent of Schur's Matrix, Jour. Australian Math. Soc. 21(4) (series A) (1976), 487-497.

Extensions

More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 17 2007