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Search: id:A137639
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| 1, 2, 1, 3, 0, 1, 5, 2, 0, 1, 7, 1, 0, 0, 1, 11, 3, 2, 0, 0, 1, 15, 2, 1, 0, 0, 0, 1, 22, 6, 1, 2, 0, 0, 0, 1, 30, 5, 3, 1, 0, 0, 0, 0, 1, 42, 9, 2, 1, 2, 0, 0, 0, 0, 1, 56, 9, 3, 1, 1, 0, 0, 0, 0, 0, 1, 77, 16, 6, 3, 1, 2, 0, 0, 0, 0, 0, 1
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Left border = A000041 starting with offset 1: (1, 2, 3, 5, 7, 11, 15,...). Row sums = A137640: (1, 3, 4, 8, 9, 17, 19,...).
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FORMULA
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A026794 * A051731 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 1;
3, 0, 1;
5, 2, 0, 1;
7, 1, 0, 0, 1;
11, 3, 2, 0, 0, 1;
15, 2, 1, 0, 0, 0, 1;
22, 6, 1, 2, 0, 0, 0, 1;
30, 5, 3, 1, 0, 0, 0, 0, 1;
...
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CROSSREFS
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Cf. A000041, A137640, A026794, A051731.
Sequence in context: A113287 A096798 A137587 this_sequence A113288 A035215 A147654
Adjacent sequences: A137636 A137637 A137638 this_sequence A137640 A137641 A137642
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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 31 2008
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