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A164961
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Triangle read by rows: T[n,m] = quadruple factorials A001813(n) * binomials A007318(n,m)
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1
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1, 2, 2, 12, 24, 12, 120, 360, 360, 120, 1680, 6720, 10080, 6720, 1680, 30240, 151200, 302400, 302400, 151200, 30240, 665280, 3991680, 9979200, 13305600, 9979200, 3991680, 665280, 17297280, 121080960, 363242880, 605404800, 605404800
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Row sums give A052714 [From Tilman Neumann (Tilman.Neumann(AT)web.de), Sep 07 2009]
Triangle T(n,k), read by rows, given by (2, 4, 6, 8, 10, 12, 14, ...) DELTA ((2, 4, 6, 8, 10, 12, 14, ...) where DELTA is the operator defined in A084938. - DELEHAM Philippe, Jan 07 2012
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LINKS
| More terms [From Tilman Neumann (Tilman.Neumann(AT)web.de), Sep 07 2009]
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FORMULA
| T(n,k) = A085881(n,k)*2^n. - DELEHAM Philippe, Jan 07 2012
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EXAMPLE
| Triangle begins :
1
2, 2
12, 24, 12
120, 360, 360, 120
1680, 6720, 10080, 6720, 1680
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CROSSREFS
| Cf. A084938, A085881
Sequence in context: A178845 A140431 A092900 * A122007 A137782 A131384
Adjacent sequences: A164958 A164959 A164960 * A164962 A164963 A164964
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KEYWORD
| nonn,tabl
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AUTHOR
| Tilman Neumann (Tilman.Neumann(AT)web.de), Sep 02 2009
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