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1, 2, 4, 4, 5, 8, 7, 8, 9, 13, 11, 12, 13, 14, 19, 16, 17, 18, 19, 20, 26, 22, 23, 24, 25, 26, 27, 34, 29, 30, 31, 32, 33, 34, 35, 43, 37, 38, 39, 40, 41, 42, 43, 44, 53
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Row sums = A132127: (1, 6, 17, 37, 69, 116, 181,...)
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FORMULA
| A051340 + A000027 - A000012 as infinite lower triangular matrices.
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EXAMPLE
| First few rows of the triangle are:
1;
2, 4;
4, 5, 8;
7, 8, 9, 13;
11, 12, 13, 14, 19;
16, 17, 18, 19, 20, 26;
...
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CROSSREFS
| Cf. A051340, A000027, A000012, A132127.
Sequence in context: A118001 A111138 A035625 * A084824 A184615 A151969
Adjacent sequences: A132125 A132126 A132127 * A132129 A132130 A132131
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 10 2007
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