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A090683
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Triangle read by rows defined by T(n,k)= A007318(n,k)*A048993(n,k).
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1
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1, 0, 1, 0, 2, 1, 0, 3, 9, 1, 0, 4, 42, 24, 1, 0, 5, 150, 250, 50, 1, 0, 6, 465, 1800, 975, 90, 1, 0, 7, 1323, 10535, 12250, 2940, 147, 1, 0, 8, 3556, 54096, 119070, 58800, 7448, 224, 1, 0, 9, 9180, 254100, 979020, 875826, 222264, 16632, 324, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,5
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COMMENTS
| {1}; {0, 1}; {0, 2, 1 }; {0, 3, 9, 1}; {0, 4, 42, 24, 1}; ...
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..230
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FORMULA
| T(n, k) = A090657(n, k)/k!.
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PROG
| (Maxima) create_list(binomial(n, k)*stirling2(n, k), n, 0, 12, k, 0, n); [Emanuele Munarini, Mar 11 2011]
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CROSSREFS
| Cf. A07318 A048993 A090657.
Sequence in context: A059297 A077874 A153007 * A161552 A095859 A191897
Adjacent sequences: A090680 A090681 A090682 * A090684 A090685 A090686
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KEYWORD
| easy,nonn,tabl
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AUTHOR
| DELEHAM Philippe (kolotoko(AT)wanadoo.fr), Dec 18 2003
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