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Search: id:A131817
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| 1, 2, 2, 4, 2, 3, 8, 4, 2, 4, 16, 8, 4, 2, 5, 32, 16, 8, 4, 2, 6, 64, 32, 16, 8, 4, 2, 7, 128, 64, 32, 16, 8, 4, 2, 8, 256, 128, 64, 32, 16, 8, 4, 2, 9, 512, 256, 128, 64, 32, 26, 8, 4, 2, 10
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row sums = A083706: (1, 4, 9, 18, 35,...).
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FORMULA
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A051340 + A130321 - A000012 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 2;
4, 2, 3;
8, 4, 2, 4;
16, 8, 4, 2, 5;
32, 16, 8, 4, 2, 6;
64, 32, 16, 8, 4, 2, 7;
...
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CROSSREFS
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Cf. A051340, A130321, A083706.
Sequence in context: A130860 A161535 A138785 this_sequence A138232 A102641 A054763
Adjacent sequences: A131814 A131815 A131816 this_sequence A131818 A131819 A131820
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KEYWORD
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nonn,tabl,more
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 18 2007
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