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%I #7 Mar 30 2012 16:51:57
%S 1,1,1,11,53,103,2119,16687,16481,1468457,1456321,63633137,2467007773,
%T 34361893981,171045872261,8178130767479,138547156531409,
%U 92079694567171,47106033220679059,939765362752547227,6563440628747948887,39299278806015611311,9923922230666898717143,79253545592131482810517,5934505493938805432851513,154068892631103602583645049,461572649528573755888451011,116167945043852116348068366947,3364864615063302680426807870189
%N Numerator of n!*Sum((-1)^k/k!, k=0..n)/(n-1)^n.
%C The fraction is a lower bound on certain permanents.
%D G. P. Egorychev, Van der Waerden conjecture and applications, pp. 3-26 in Handbook of Algebra, Vol. 1, ed. M. Hazewinkel, Elsevier, 1996.
%e 1, 1/4, 1/9, 11/256, 53/3125, 103/15552, 2119/823543, 16687/16777216, 16481/43046721, ...
%Y See A178454 for denominators.
%K nonn,frac
%O 2,4
%A _N. J. A. Sloane_, Dec 22 2010
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