OFFSET
1,4
LINKS
FORMULA
E.g.f. for row m: (sum(k=0..s) z^k/k!)^m, s=3
EXAMPLE
Triangle T(n, m) is
1, 1, 1;
2, 4, 8, 14, 20, 20;
3, 9, 27, 78, 210, 510, 1050, 1680, 1680;
4, 16, 64, 252, 960, 3480, 11760, 36120, 97440, 218400, 369600, 369600;
MAPLE
P := proc(n, m, s) n!*coeftayl(add(z^k/k!, k=0..s)^m, z=0, n); end;
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Marko Riedel, Oct 15 2014
STATUS
approved