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Search: id:A127648
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| A127648 |
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Triangle read by rows: row n consists of n-1 zeros followed by n. |
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+0
36
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| 1, 0, 2, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 15
(list; table; graph; listen)
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OFFSET
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1,3
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FORMULA
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Infinite lower triangular matrix with (1, 2, 3,...) 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, 4;
0, 0, 0, 0, 5;
0, 0, 0, 0, 0, 6;
0, 0, 0, 0, 0, 0, 7;
...
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CROSSREFS
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This sequence * A007318 (Pascal's Triangle) = A003506 with row sums A001787; A007318 * this sequence = A103406 with row sums A001792.
Cf. A007318, A003506, A001787, A103406, A001792.
Sequence in context: A165664 A019263 A091731 this_sequence A132681 A132825 A049597
Adjacent sequences: A127645 A127646 A127647 this_sequence A127649 A127650 A127651
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KEYWORD
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nonn,easy,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 22 2007
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EXTENSIONS
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More terms from Terryjames Morris (trm5002(AT)psu.edu), Mar 09 2007
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