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Search: id:A132774
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| A132774 |
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A natural number operator. |
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+0
3
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| 1, 2, 3, 0, 4, 5, 0, 0, 6, 7, 0, 0, 0, 8, 9, 0, 0, 0, 0, 10, 11, 0, 0, 0, 0, 0, 12, 13, 0, 0, 0, 0, 0, 0, 14, 15
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row sums = A016813: (1, 5, 9, 13,...). A132774 * [1, 2, 3,...] = A033951: (1, 8, 23, 46, 77, 116,...).
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FORMULA
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As an infinite lower triangular matrix, (1, 3, 5,...) in the main diagonal and (2, 4, 6,...) in the subdiagonal; with the rest zeros.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 3;
0, 4, 5;
0, 0, 6, 7;
0, 0, 0, 8, 9;
0, 0, 0, 0, 10, 11;
...
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CROSSREFS
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Cf. A016813, A033951.
Sequence in context: A025639 A140502 A154860 this_sequence A007945 A011150 A100112
Adjacent sequences: A132771 A132772 A132773 this_sequence A132775 A132776 A132777
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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), Aug 28 2007
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