OFFSET
0,7
COMMENTS
Row sums are A002801. The Riordan array [exp(-x/m)(1-mx)^(-1/m^2),x] has production matrix with
e.g.f. exp(x*t)(t+1/(1-mx)).
EXAMPLE
Triangle begins
1,
0, 1,
1, 0, 1,
4, 3, 0, 1,
27, 16, 6, 0, 1,
232, 135, 40, 10, 0, 1,
2455, 1392, 405, 80, 15, 0, 1
The production matrix of this array begins
0, 1,
1, 0, 1,
4, 2, 0, 1,
24, 12, 3, 0, 1,
192, 96, 24, 4, 0, 1;
1920, 960, 240, 40, 5, 1
and has e.g.f. exp(x*t)(t+1/(1-2x)).
CROSSREFS
KEYWORD
AUTHOR
Paul Barry, Nov 26 2008
STATUS
approved