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 A103719 Column m=2 sequence of triangle A103718(n,m), n >= 0 (without leading zeros). 2

%I

%S 1,7,45,310,2359,19901,185408,1896380,21163076,256176052,3345574440,

%T 46910470152,703146058224,11222813318544,190069993713024,

%U 3404916420352128,64333503601542144,1278725806081645056

%N Column m=2 sequence of triangle A103718(n,m), n >= 0 (without leading zeros).

%F a(n) = |S1(n+3, 3)| + |S1(n+3, 4)| = |S1(n+4, 4)| - (n+2)*|S1(n+3, 4)|, with S1(n, m):= A048994(n, m), n >= m >= 0 (Stirling1 triangle).

%Y Cf. A048994, A103718.

%K nonn,easy

%O 0,2

%A _Wolfdieter Lang_, Feb 24 2005

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Last modified January 19 00:03 EST 2021. Contains 340262 sequences. (Running on oeis4.)