

A104254


n^n  (1)^n(n+1)!.


0



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

1,1


COMMENTS

Permanent of the (n X n) matrix {1/(x_iy_j), 1<=i<=n, 1<=j<=n}, where x_1,x_2,...,x_m are the zeros of x^n1 and y_1,y_2,...,y_m the zeros of y^(n+1)+y^n1.


LINKS

Table of n, a(n) for n=1..17.
G.N. Han and C. Krattenthaler, Rectangular Scotttype permanents


CROSSREFS

Sequence in context: A009395 A226769 A093892 * A231576 A190286 A063513
Adjacent sequences: A104251 A104252 A104253 * A104255 A104256 A104257


KEYWORD

sign


AUTHOR

Ralf Stephan, Mar 02 2005


STATUS

approved



