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Search: id:A134446
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| 1, 1, 2, 2, 2, 3, 2, 4, 3, 4, 3, 4, 6, 4, 5, 3, 6, 6, 8, 5, 6, 4, 6, 9, 8, 10, 6, 7, 4, 8, 9, 12, 10, 12, 7, 8, 5, 8, 12, 12, 15, 12, 14, 8, 9, 5, 10, 12, 16, 15, 18, 14, 16, 9, 10
(list; table; graph; listen)
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OFFSET
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1,3
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COMMENT
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Row sums = A002623: (1, 3, 7, 13, 22, 34,...).
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FORMULA
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A128174 * A002260 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
1, 2;
2, 2, 3;
2, 4, 3, 4;
3, 4, 6, 4, 5;
3, 6, 6, 8, 5, 6;
4, 6, 9, 8, 10, 6, 7;
...
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CROSSREFS
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Cf. A002260, A128174, A002623.
Sequence in context: A110021 A036013 A126336 this_sequence A125749 A014085 A029210
Adjacent sequences: A134443 A134444 A134445 this_sequence A134447 A134448 A134449
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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), Oct 25 2007
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