OFFSET
0,2
COMMENTS
Row sums = A072863: (1, 3, 9, 26, 72, 192, 496, ...).
FORMULA
Binomial transform of an infinite lower triangular matrix having n-th row = (n-1) zeros followed by T(n), 1, where T(n) = n-th triangular number.
EXAMPLE
First few rows of the triangle:
1;
2, 1;
3, 5, 1;
4, 12, 9, 1;
5, 22, 30, 14, 1;
6, 35, 70, 60, 20, 1;
7, 51, 135, 170, 105, 27, 1;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Oct 15 2007
STATUS
approved