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1, 1, 1, 1, 1, 3, 1, 6, 6, 1, 10, 30, 1, 15, 90, 60, 1, 21, 210, 420, 1, 18, 420, 1680, 1365, 1, 36, 756, 5040, 12285, 1, 45, 1260, 12600, 61425, 38745, 1, 55, 1980, 27720, 225225, 426195, 1, 66, 2970, 55440, 675675, 2557170, 1725570, 1, 78, 4290
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,6
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LINKS
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FORMULA
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Triangle read by rows, A100861 * (A118930 * n^(n-k)) = M*Q. M = A100861 as an infinite lower triangular matrix and Q = a matrix with A118930 as the main diagonal and the rest zeros.
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EXAMPLE
|
First few rows of the triangle =
1;
1;
1, 1;
1, 3;
1, 6, 6;
1, 10, 30;
1, 15, 90, 60;
1, 21, 210, 420;
1, 28, 420, 1680, 1365;
1, 36, 756, 5040, 12285;
1, 45, 1260, 12600, 61425, 38745;
1, 55, 1980, 27720, 225225, 426195;
...
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MAPLE
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end proc:
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CROSSREFS
|
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KEYWORD
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nonn,tabf
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AUTHOR
|
|
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STATUS
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approved
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