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Search: id:A132825
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| A132825 |
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Triangle read by rows: zeros except for right border which are the partition numbers A000041. |
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+0
2
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| 1, 0, 2, 0, 0, 3, 0, 0, 0, 5, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 22
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OFFSET
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1,3
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COMMENT
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Row sums = partition numbers, A000041 starting with A000041(1): (1, 2, 3, 5, 7, 11, 15,...). A132825 * [1, 2, 3,...] = A066186: (1, 4, 9, 20, 35, 66, 105,...).
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FORMULA
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Infinite lower triangular matrix, partition numbers (A000041, starting 1, 2, 3, 5, 7, 11,...) in the main diagonal and the rest zeros.
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EXAMPLE
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First few rows of the triangle are:
1;
0, 2;
0, 0, 3;
0, 0, 0, 5;
0, 0, 0, 0, 7;
0, 0, 0, 0, 0, 11;
...
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CROSSREFS
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Cf. A000041, A066186.
Sequence in context: A091731 A127648 A132681 this_sequence A049597 A035377 A136274
Adjacent sequences: A132822 A132823 A132824 this_sequence A132826 A132827 A132828
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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), Sep 02 2007
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