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Search: id:A137596
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| 1, 1, 1, 1, 2, 1, 1, 3, 4, 1, 1, 4, 11, 7, 1, 1, 5, 26, 32, 11, 1, 1, 6, 57, 122, 76, 16, 1, 1, 7, 120, 423, 426, 156, 22, 1, 1, 8, 247, 1389, 2127, 1206, 288, 29, 1, 1, 9, 502, 4414, 9897, 8157, 2934, 491, 37, 1
(list; table; graph; listen)
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OFFSET
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1,5
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COMMENT
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Row sums = A005001 starting (1, 2, 4, 9, 24, 76, 279,...).
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FORMULA
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A000012 * A048993 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, 2, 1;
1, 3, 4, 1;
1, 4, 11, 7, 1;
1, 5, 26, 32, 11, 1;
1, 6, 57, 122, 76, 16, 1;
1, 7, 120, 423, 426, 156, 22, 1;
...
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CROSSREFS
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Cf. A005001, A048993.
Sequence in context: A073165 A137153 A063841 this_sequence A111669 A124834 A104495
Adjacent sequences: A137593 A137594 A137595 this_sequence A137597 A137598 A137599
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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), Jan 29 2008
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