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Search: id:A135722
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| 1, 1, 1, 1, 1, 2, 1, 1, 3, 5, 1, 1, 3, 15, 14, 1, 1, 3, 23, 84, 42, 1, 1, 3, 27, 244, 466, 132, 1, 1, 3, 28, 494, 2444, 2514, 429, 1, 1, 3, 28, 796, 8720, 22022, 13233, 1430, 1, 1, 3, 28, 1094, 24394, 128514, 181841, 68376, 4862
(list; table; graph; listen)
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OFFSET
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0,6
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COMMENT
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Row sums = A003422: (1, 2, 4, 10, 34, 154, 874,...). Main diagonal = A000108, the Catalan numbers: (1, 1, 2, 5, 14, 42, 132,...)
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FORMULA
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A000012 * A122890 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
1, 1;
1, 1, 2;
1, 1, 3, 5;
1, 1, 3, 15, 14;
1, 1, 3, 23, 84, 42;
1, 1, 3, 27, 244, 466, 132;
1, 1, 3, 28, 494, 2444, 2514, 429;
...
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CROSSREFS
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Cf. A003422, A122890, A000108.
Sequence in context: A057044 A153899 A068098 this_sequence A049513 A121207 A097084
Adjacent sequences: A135719 A135720 A135721 this_sequence A135723 A135724 A135725
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 25 2007
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