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1, 2, 2, 2, 2, 3, 3, 4, 3, 4, 2, 2, 3, 4, 5, 4, 6, 6, 4, 5, 6, 2, 2, 3, 4, 5, 6, 7, 4, 6, 6, 8, 5, 6, 7, 8, 3, 4, 6, 4, 5, 6, 7, 8, 9, 4, 6, 6, 8, 10, 6, 7, 8, 9, 10
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Row sums = A007437: (1, 4, 7, 14, 16, 3, 29, 50,...). Left border = A000010.
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FORMULA
| A051731 * A002260 as infinite lower triangular matrices.
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EXAMPLE
| First few rows of the triangle are:
1;
2, 2;
2, 2, 3;
3, 4, 3, 4;
2, 2, 3, 4, 5;
4, 6, 6, 4, 5, 6;
2, 2, 3, 4, 5, 6, 7;
4, 6, 6, 8, 5, 6, 7, 8;
3, 4, 6, 4, 5, 6, 7, 8, 9;
4, 6, 6, 8, 10, 6, 7, 8, 9, 10;
...
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CROSSREFS
| Cf. A054731, A007437, A000010.
Sequence in context: A024366 A140682 A049317 * A106161 A105588 A064658
Adjacent sequences: A134541 A134542 A134543 * A134545 A134546 A134547
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 31 2007
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