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Search: id:A131416
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| 1, 4, 3, 8, 8, 5, 13, 14, 12, 7, 19, 21, 20, 16, 9, 26, 29, 29, 26, 20, 11, 34, 38, 39, 37, 32, 24, 13, 43, 48, 50, 49, 45, 38, 28, 15, 53, 59, 62, 62, 59, 53, 44, 32, 17, 64, 71, 75, 76, 74, 69, 61, 50, 36, 19
(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 column = A034856: (1, 4, 8, 13, 19, 26, 34,...). Row sums = A127735: (1, 7, 21, 46, 85...).
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FORMULA
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(A000012 * A002260) + (A002260 * A000012) - A000012; as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
4, 3;
8, 8, 5;
13, 14, 12, 7;
19, 21, 20, 16, 9;
26, 29, 29, 26, 20, 11;
...
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CROSSREFS
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Cf. A002260, A034856, A127735, A000012.
Sequence in context: A116583 A134390 A021699 this_sequence A004125 A137924 A105185
Adjacent sequences: A131413 A131414 A131415 this_sequence A131417 A131418 A131419
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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), Jul 08 2007
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