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Search: id:A134447
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| 1, 1, 2, 4, 2, 3, 4, 6, 3, 4, 9, 6, 8, 4, 5, 9, 12, 8, 10, 5, 6, 16, 12, 15, 10, 12, 6, 7, 16, 20, 15, 18, 12, 14, 7, 8, 25, 20, 24, 18, 21, 14, 16, 8, 9, 25, 30, 24, 28, 21, 24, 16, 18, 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 = A049778: (1, 3, 9, 17, 32, 50, 78,...).
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FORMULA
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A002260 * A128174 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
1, 2;
4, 2, 3;
4, 6, 3, 4;
9, 6, 8, 4, 5;
9, 12, 8, 10, 5, 6;
16, 12, 15, 10, 12, 6, 7;
...
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CROSSREFS
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Cf. A128174, A002260, A049778.
Adjacent sequences: A134444 A134445 A134446 this_sequence A134448 A134449 A134450
Sequence in context: A054507 A054240 A082864 this_sequence A093056 A141387 A134400
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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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