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Search: id:A105060
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| A105060 |
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Triangle read by rows in which the n-th n consists of the first n nonzero terms of A033312. |
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+0
1
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| 1, 1, 5, 1, 5, 23, 1, 5, 23, 119, 1, 5, 23, 119, 719, 1, 5, 23, 119, 719, 5039, 1, 5, 23, 119, 719, 5039, 40319, 1, 5, 23, 119, 719, 5039, 40319, 362879, 1, 5, 23, 119, 719, 5039, 40319, 362879, 3628799, 1, 5, 23, 119, 719, 5039, 40319, 362879, 3628799, 39916799
(list; table; graph; listen)
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OFFSET
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1,3
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COMMENT
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A triangular array based on the integer determinant content.
Det[{{0,-n,n+1},{n+1},0,-n},{-n,n+1,0}}=(n+1)^3-n^3 a(n)=a(n-1)+6*n
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MATHEMATICA
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a[1] = 1; a[n_] := a[n] = a[n - 1] + m!*n; aa = Flatten[Table[Table[a[n], {n, 1, m}], {m, 1, 20}]]
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CROSSREFS
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Adjacent sequences: A105057 A105058 A105059 this_sequence A105061 A105062 A105063
Sequence in context: A143384 A046611 A101692 this_sequence A066805 A028284 A096462
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KEYWORD
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nonn,tabl
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AUTHOR
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Roger Bagula (rlbagulatftn(AT)yahoo.com), Apr 05 2005
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