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Search: id:A128807
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| 1, 2, 1, 1, 2, 1, 3, 4, 3, 1, 1, 4, 6, 4, 1, 2, 7, 11, 10, 5, 1, 1, 6, 15, 20, 15, 6, 1, 4, 11, 24, 36, 35, 21, 7, 1, 1, 8, 28, 56, 70, 56, 28, 8, 1, 2, 13, 42, 88, 127, 126, 84, 36, 9, 1
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row sums = A127804: (1, 3, 4, 11, 16, 36, 64,...). Left column = the Ruler sequence, A001511: (1, 2, 1, 3, 1, 2, 1, 4,...). A129262 = A007318 * A115361.
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FORMULA
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A115361 * A007318 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 1;
1, 2, 1;
3, 4, 3, 1;
1, 4, 6, 4, 1;
2, 7, 11, 10, 5, 1;
1, 6, 15, 20, 15, 6, 1;
4, 11, 24, 36, 35, 21, 7, 1;
...
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CROSSREFS
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Cf. A115361, A007318, A129262, A001511, A127804.
Sequence in context: A105248 A076302 A104524 this_sequence A071628 A033809 A046067
Adjacent sequences: A128804 A128805 A128806 this_sequence A128808 A128809 A128810
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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 06 2007
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