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1, 2, 1, 3, 2, 1, 4, 3, 4, 1, 5, 4, 10, 4, 1, 6, 5, 20, 10, 6, 1, 7, 6, 35, 20, 21, 6, 1, 8, 7, 56, 35, 56, 21, 8, 1, 9, 8, 84, 56, 126, 56, 36, 8, 1, 10, 9, 120, 84, 252, 126, 120, 36, 10, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Row sums = A003945: (1, 3, 6, 12, 24, 48, 96,...).
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FORMULA
| Binomial transform of triangle A133080.
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EXAMPLE
| First few rows of the triangle are:
1;
2, 1;
3, 2, 1;
4, 3, 4, 1;
5, 4, 10, 4, 1;
6, 5, 20, 10, 6, 1;
7, 6, 35, 20, 21, 6, 1;
...
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CROSSREFS
| Cf. A133080, A003945.
Sequence in context: A135227 A104325 A204925 * A118851 A112383 A133404
Adjacent sequences: A133081 A133082 A133083 * A133085 A133086 A133087
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Sep 16 2007
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