OFFSET
0,2
COMMENTS
Row sums = A048474: (1, 4, 13, 37, 97, 241, 577, ...).
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.
EXAMPLE
First few rows of the triangle:
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;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Oct 14 2007
STATUS
approved