login
A132776
A128064 (unsigned) * A007318.
2
1, 3, 2, 5, 8, 3, 7, 18, 15, 4, 9, 32, 42, 24, 5, 11, 50, 90, 80, 35, 6, 13, 72, 165, 200, 135, 48, 7, 15, 98, 273, 420, 385, 210, 63, 8, 17, 128, 420, 784, 910, 672, 308, 80, 9, 19, 162, 612, 1344, 1890, 1764, 1092, 432, 99, 10
OFFSET
0,2
COMMENTS
Row sums = A053220: (1, 5, 16, 44, 112, 272, ...).
A003506 = A007318 * A128064 (unsigned).
FORMULA
A128064 (unsigned) * A007318 as infinite lower triangular matrices.
EXAMPLE
First few rows of the triangle:
1;
3, 2;
5, 8, 3;
7, 18, 15, 4;
9, 32, 42, 24, 5;
11, 50, 90, 80, 35, 6;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Aug 29 2007
STATUS
approved