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Search: id:A135227
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| 1, 2, 1, 3, 2, 1, 4, 3, 3, 1, 5, 4, 6, 4, 1, 6, 5, 10, 10, 5, 1, 7, 6, 15, 20, 15, 6, 1, 8, 7, 21, 35, 35, 21, 7, 1, 9, 8, 28, 56, 70, 56, 28, 8, 1, 10, 9, 36, 84, 126, 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 = A006127: (1, 3, 6, 11, 20, 37,...).
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FORMULA
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A000012 * A135225 as infinite lower triangular matrices. Left border of 1's in Pascal's Triangle (A007318) is replaced with a column of (1,2,3,...).
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EXAMPLE
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First few rows of the triangle are:
1;
1, 2;
3, 2, 1;
4, 3, 3, 1;
5, 4, 6, 4, 1;
6, 5, 10, 10, 5, 1;
7, 6, 15, 20, 15, 6, 1;
...
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CROSSREFS
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Cf. A007318, A006127, A135225.
Adjacent sequences: A135224 A135225 A135226 this_sequence A135228 A135229 A135230
Sequence in context: A007336 A133334 A003603 this_sequence A104325 A133084 A118851
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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), Nov 23 2007
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