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Search: id:A133113
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| 1, 2, 1, 4, 2, 1, 6, 4, 4, 1, 9, 6, 11, 4, 1, 12, 9, 24, 11, 6, 1, 16, 12, 46, 24, 22, 6, 1, 20, 16, 80, 46, 62, 22, 8, 1, 25, 20, 130, 80, 148, 62, 37, 8, 1, 30, 25, 200, 130, 314, 148, 128, 37, 10, 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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Row sums = 2^n - 1, A000225: (1, 3, 7, 15, 31,...).
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FORMULA
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A128174 * A007318 * A133080 as infinite lower triangular matrices.
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EXAMPLE
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Frist few rows of the triangle are:
1;
2, 1;
4, 2, 1;
6, 4, 4, 1;
9, 6, 11, 4, 1;
12, 9, 24, 11, 6, 1;
16, 12, 46, 24, 22, 6, 1;
20, 16, 80, 46, 62, 22, 8, 1;
...
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CROSSREFS
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Cf. A133080, A007318, A128174, A000225.
Sequence in context: A147542 A128177 A087738 this_sequence A124840 A145118 A124927
Adjacent sequences: A133110 A133111 A133112 this_sequence A133114 A133115 A133116
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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), Sep 14 2007
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