OFFSET
0,5
FORMULA
Column k has g.f. x^k*sum{j=0..k, A114280(k, j)*x^j/(1-x)^(j+1)}.
EXAMPLE
Triangle begins
1;
1, 1;
1, 2, 1;
1, 3, 2, 1;
1, 4, 4, 3, 1;
1, 5, 7, 8, 3, 1;
1, 6,11,17, 8, 4, 1;
1, 7,16,31,17,14, 4, 1;
CROSSREFS
KEYWORD
AUTHOR
Paul Barry, Nov 20 2005
STATUS
approved