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Search: id:A134390
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| 1, 4, 3, 8, 8, 3, 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, 5344, 32, 17, 64, 71, 75, 76, 64, 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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Row sums = A127736: (1, 7, 21, 46, 85, 141, 217,...).
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FORMULA
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(A000012 * A002260 + A002260 * A000012) - A000012 as infinite lower triangular matrices; where A000012 = (1; 1,1; 1,1,1;...) and A002260 = (1; 1,2; 1,2,3;...).
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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, A127736.
Sequence in context: A132021 A089368 A116583 this_sequence A021699 A131416 A004125
Adjacent sequences: A134387 A134388 A134389 this_sequence A134391 A134392 A134393
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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 23 2007
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