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1, 1, 1, 0, 2, 1, 0, 2, 3, 1, 0, 2, 5, 4, 1, 0, 2, 7, 9, 5, 1, 0, 2, 9, 16, 14, 6, 1, 0, 2, 11, 25, 30, 20, 7, 1, 0, 2, 13, 36, 55, 50, 27, 8, 1, 0, 2, 15, 49, 91, 105, 77, 35, 9, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,5
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COMMENTS
| Row sums = A098011 starting (1, 2, 3, 6, 12, 24, 48,...). A131085 = A007318 * A129686
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FORMULA
| A129686(signed): (1,1,1,...) in the main diagonal and (-1,-1,-1,...) in the subsubdiagonal); * A007318, Pascal's triangle; as infinite lower triangular matrices.
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EXAMPLE
| First few rows of the triangle are:
1;
1, 1;
0, 2, 1;
0, 2, 3, 1;
0, 2, 5, 4, 1;
0, 2, 7, 9, 5, 1;
0, 2, 9, 16, 14, 6, 1;
0, 2, 11, 25, 30, 20, 7, 1;
...
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CROSSREFS
| Cf. A129686, A098011, A131085.
Sequence in context: A051070 A104041 A104402 * A143067 A123949 A144082
Adjacent sequences: A131081 A131082 A131083 * A131085 A131086 A131087
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 14 2007
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