A104254 a(n) = n^n - (-1)^n*(n+1)!.

3, -2, 51, 136, 3845, 41616, 863863, 16414336, 391049289, 9960083200, 285790672211, 8909873427456, 302962284883453, 11110699151190016, 437914813170747375, 18446388386281455616, 827246664260042492177

Offset

1,1

Comments

Permanent of the (n X n) matrix {1/(x_i-y_j), 1<=i<=n, 1<=j<=n}, where x_1,x_2,...,x_m are the zeros of x^n-1 and y_1,y_2,...,y_m the zeros of y^(n+1)+y^n-1.

Links

Table of n, a(n) for n=1..17.

G.-N. Han and C. Krattenthaler, Rectangular Scott-type permanents

Crossrefs

Sequence in context: A226769 A331474 A093892 * A336519 A231576 A336520

Adjacent sequences: A104251 A104252 A104253 * A104255 A104256 A104257

Keyword

sign

Author

Ralf Stephan, Mar 02 2005

Status

approved