%I #8 Oct 01 2016 11:55:55
%S 1,3,14,78,508,3796,32048,301872,3139680,35746080,442258560,
%T 5909028480,84802072320,1301090515200,21253339699200,368281038182400,
%U 6747621163315200,130338926671564800,2647326900234240000,56404832240977920000
%N The first subdiagonal of triangle A196842.
%F a(n) = A196842(n,n-1).
%F a(n) + (-2*n-1)*a(n-1) + n^2*a(n-2) = 0.
%Y Cf. A196842.
%K nonn,easy
%O 1,2
%A _R. J. Mathar_, Oct 01 2016