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A134232
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A007318 * M, where M = triangle in which row n consists of n-1 zeros followed by 2n-1, n+1.
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1
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1, 2, 2, 3, 7, 3, 4, 15, 14, 4, 5, 26, 38, 23, 5, 6, 40, 80, 75, 34, 6, 7, 57, 145, 185, 129, 47, 7, 8, 77, 238, 385, 364, 203, 62, 8, 0, 9, 100, 364, 714, 854, 644, 300, 79, 9, 10, 126, 528, 1218, 1764, 1680, 1056, 423, 98, 10
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Row sums = A048474: (1, 4, 13, 37, 97, 241, 577,...).
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FORMULA
| Binomial transform of an infinite lower triangular matrix with rows = (n-1) zeros followed by (2n-1), (n+1). A007318 * an infinite lower triangular matrix with (1,2,3,...) in the main diagonal, (1,3,5,...) in the subdiagonal and the rest zeros.
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EXAMPLE
| First few rows of the triangle are:
1;
2, 2;
3, 7, 3;
4, 15, 14, 4;
5, 26, 38, 23, 5;
6, 40, 80, 75, 34, 6;
7, 57, 145, 185, 129, 47, 7;
...
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CROSSREFS
| Cf. A048474.
Sequence in context: A195694 A021451 A183442 * A123934 A203362 A183407
Adjacent sequences: A134229 A134230 A134231 * A134233 A134234 A134235
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 14 2007
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