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The first subdiagonal of triangle A196842.
1

%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