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A091756 Seventh column (m=8) of array A091752 ((-1,2)Stirling2). 1

%I

%S 1,220,48720,14463680,5762556800,3000655257600,1987324218880000,

%T 1634736979972096000,1636859558116823040000,1961447726093804748800000,

%U 2772502956616965206835200000,4565871212782705024303104000000

%N Seventh column (m=8) of array A091752 ((-1,2)Stirling2).

%F a(n)= A091752(n, 8), n>=4.

%F a(n)= (9/6!)*(n-3)*(9*n^3-45*n^2+36*n+40)*(3*(n-3))!/((3^(n-3))*(n-3)!)= (9/6!)*(n-3)*(9*n^3-45*n^2+36*n+40)*A052502(n-3), n>=4.

%K nonn,easy

%O 4,2

%A _Wolfdieter Lang_, Feb 27 2004

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Last modified October 22 22:34 EDT 2021. Contains 348180 sequences. (Running on oeis4.)