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Search: id:A129687
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| 1, 1, 1, 2, 2, 1, 2, 4, 3, 1, 2, 6, 7, 4, 1, 2, 8, 13, 11, 5, 1, 2, 10, 21, 24, 16, 6, 1, 2, 12, 31, 45, 40, 22, 7, 1, 2, 14, 43, 76, 85, 62, 29, 8, 1, 2, 16, 57, 119, 161, 147, 91, 37, 9, 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 = A084215: (1, 2, 5, 10, 20, 40, 80,...). A007318 * A129686 = A124725.
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FORMULA
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A129686 * A007318 (Pascal's Triangle), as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
1, 1;
2, 2, 1;
2, 4, 3, 1;
2, 6, 7, 4, 1;
2, 8, 13, 11, 5, 1;
2, 10, 21, 24, 16, 6, 1;
2, 12, 31, 45, 40, 22, 7, 1;
...
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CROSSREFS
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Cf. A129686, A007318, A124725.
Sequence in context: A069780 A066954 A029262 this_sequence A128176 A035374 A048299
Adjacent sequences: A129684 A129685 A129686 this_sequence A129688 A129689 A129690
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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), Apr 28 2007
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