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A111672
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Array T(n,k) = A153277(n-1,k) = A144150(n,k) read downwards antidiagonals.
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2
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1, 1, 1, 1, 2, 1, 1, 3, 5, 1, 1, 4, 12, 15, 1, 1, 5, 22, 60, 52, 1, 1, 6, 35, 154, 358, 203, 1, 1, 7, 51, 315, 1304, 2471, 877, 1, 1, 8, 70, 561, 3455, 12915, 19302, 21147, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,5
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COMMENTS
| Column k is obtained by taking the k-th matrix power of the triangle A008277 and multiplying from the right with the column vector [1,0,0,0,....].
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EXAMPLE
| The array starts
1, 1, 1, 1, 1, 1, ...
1, 2, 3, 4, 5, 6, ...
1, 5, 12, 22, 35, 51, ...
1, 15, 60, 154, 315, 561, ...
1, 52, 358, 1304, 3455, 7556, ...
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CROSSREFS
| Cf. A008277, A000326 (row 3), A005945 (row 4), A000110 (column 2), A000258 (column 3), A000307 (column 4), A000357 (column 5), A000405 (column 6), A111669 (column 7), A081624.
Sequence in context: A083064 A204057 A112338 * A128198 A123349 A123352
Adjacent sequences: A111669 A111670 A111671 * A111673 A111674 A111675
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 14 2005
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