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Search: id:A091756
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A091756 Seventh column (m=8) of array A091752 ((-1,2)Stirling2). +0
2
1, 220, 48720, 14463680, 5762556800, 3000655257600, 1987324218880000, 1634736979972096000, 1636859558116823040000, 1961447726093804748800000, 2772502956616965206835200000, 4565871212782705024303104000000 (list; graph; listen)
OFFSET

4,2

FORMULA

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

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.

CROSSREFS

Adjacent sequences: A091753 A091754 A091755 this_sequence A091757 A091758 A091759

Sequence in context: A107506 A140918 A049023 this_sequence A048931 A052478 A020247

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Feb 27 2004

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.


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