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Search: id:A131335
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| 1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 3, 2, 4, 2, 1, 3, 3, 6, 4, 3, 1, 4, 3, 9, 6, 7, 3, 1, 4, 4, 12, 9, 13, 7, 4, 1, 5, 4, 16, 12, 22, 13, 11, 4, 1, 5, 5, 20, 16, 34, 22, 24, 11, 5, 1
(list; table; graph; listen)
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OFFSET
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1,4
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COMMENT
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Row sums = A000071, Fibonacci numbers - 1, starting (1, 2, 4, 7, 12, 20, 33,...).
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FORMULA
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A000012 * A131334 as infinite lower triangular matrices, where A000012 = (1; 1,1; 1,1,1;...).
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EXAMPLE
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First few rows of the triangle are:
1;
1, 1;
2, 1, 1;
2, 2, 2, 1;
3, 2, 4, 2, 1;
3, 3, 6, 4, 3, 1;
4, 3, 9, 6, 7, 3, 1;
...
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CROSSREFS
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Cf. A000071, A131334, A000012, A131332, A131333.
Sequence in context: A003646 A112758 A029437 this_sequence A046081 A062501 A067390
Adjacent sequences: A131332 A131333 A131334 this_sequence A131336 A131337 A131338
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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), Jun 29 2007
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