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1, 1, 1, 1, 1, 2, 1, 1, 2, 5, 1, 1, 1, 11, 14, 1, 1, 1, 9, 71, 42, 1, 1, 1, 5, 161, 425, 132, 1, 1, 1, 2, 251, 1979, 2383, 429, 1, 1, 1, 1, 303, 6277, 19509, 12805, 1430, 1, 1, 1, 1, 299, 15675, 106493, 168609, 66947, 4862
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,6
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COMMENTS
| Row sums = A005095: (1, 2, 4, 9, 28, 125, 726,...). Main diagonal = A000108, the Catalan numbers: (1, 1, 2, 5, 14, 42, 132,...).
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FORMULA
| A122890 + A000012 - Identity matrix; as infinite lower triangular matrices.
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EXAMPLE
| First few rows of the triangle are:
1;
1, 1;
1, 1, 2;
1, 1, 2, 5;
1, 1, 1, 11, 14;
1, 1, 1, 9, 71, 42;
1, 1, 1, 5, 161, 425, 132;
1, 1, 1, 2, 251, 1979, 2383, 429;
...
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CROSSREFS
| Cf. A122890, A005095, A000108.
Sequence in context: A153914 A151893 A000361 * A125311 A127568 A143364
Adjacent sequences: A135720 A135721 A135722 * A135724 A135725 A135726
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 25 2007
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