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%I M4820 N2062 #25 Feb 15 2019 13:52:15
%S 1,1,12,4,360,40,20160,12096,259200,604800,239500800,760320,
%T 43589145600,217945728000,1494484992000,697426329600,3201186852864000,
%U 16937496576000,1216451004088320000,30964207376793600,11469395181404160000
%N Denominator of 2*Stirling_2(n,2)/n!.
%D H. E. Salzer, Tables of coefficients for differences in terms of the derivatives, Journal of Mathematics and Physics, 23 (1944), 210-212.
%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H T. D. Noe, <a href="/A002679/b002679.txt">Table of n, a(n) for n=2..100</a>
%H <a href="/index/Be#Bernoulli">Index entries for sequences related to Bernoulli numbers.</a>
%Y Cf. A002678 (numerators).
%K nonn,frac
%O 2,3
%A _N. J. A. Sloane_
%E More terms from _Sean A. Irvine_, Dec 20 2016
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