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1, 1, 1, 1, 1, 1, 4, 4, 4, 1, 1, 4, 4, 1, 1, 6, 6, 24, 6, 6, 1, 1, 6, 6, 6, 6, 1, 1, 8, 8, 48, 12, 48, 8, 8, 1, 9, 72, 72, 108, 108, 72, 72, 9, 1, 10, 90, 720, 180, 1080, 180, 720, 90, 10, 1, 1, 10, 90, 180, 180, 180, 180, 90, 10, 1, 1, 12, 12, 120, 270, 2160, 360, 2160, 270, 120, 12, 12, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,7
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LINKS
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Table of n, a(n) for n=1..78.
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EXAMPLE
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1
1, 1
1, 1, 1
4, 4, 4, 1
1, 4, 4, 1, 1,
6, 6, 24, 6, 6, 1
1, 6, 6, 6, 6, 1, 1
8, 8, 48, 12, 48, 8, 8, 1
9, 72, 72, 108, 108, 72, 72, 9, 1
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MATHEMATICA
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cf[0] = 1; cf[n_Integer?Positive] := cf[n] = f[n]*cf[n - 1] bf[n_Integer?Positive, m_Integer?Positive] := bf[n, m] = cf[n]/(cf[m]*cf[n - m]) b = Table[Table[bf[n, m], {m, 1, n}], {n, 1, 10}] MatrixForm[b] Flatten[b]
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PROG
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(PARI) primorial(n)=prod(i=1, primepi(n), prime(i))
T(n, m)=binomial(n, m)*primorial(m)*primorial(n-m)/primorial(n) \\ Charles R Greathouse IV, Jan 16 2012
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CROSSREFS
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Sequence in context: A133889 A243756 A172985 * A172088 A159891 A201941
Adjacent sequences: A117680 A117681 A117682 * A117684 A117685 A117686
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KEYWORD
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nonn,tabl
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AUTHOR
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Roger L. Bagula, Apr 12 2006
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EXTENSIONS
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Edited by the Associate Editors of the OEIS, Aug 18 2009
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STATUS
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approved
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