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%I #14 Oct 24 2023 21:01:05
%S 8,25,144,735,4608,39285,362000,3628185,40808448,478988081,6227101888,
%T 87248724750,1300561920000,20922788404479,355587467242752,
%U 6402373698206889,121810906419200000
%N Number of permutations of length n with spread 3.
%H R. L. Graham, and D. H. Lehmer, <a href="https://doi.org/10.1017/S1446788700019339">On the Permanent of Schur's Matrix</a>, Jour. Australian Math. Soc. 21(4) (series A) (1976), 487-497.
%K nonn
%O 4,1
%A _N. J. A. Sloane_
%E More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 17 2007
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