OFFSET
1,3
COMMENTS
Row sums give A024167.
FORMULA
a[n, k]= -(-1)^(n-k+1) n/(n-k+1)(n-1)!
E.g.f.: log(1+x)/(1-y*x). - Vladeta Jovovic, Feb 07 2003
EXAMPLE
Triangle starts {1}, {-1, 2}, {2, -3, 6}, {-6, 8, -12, 24}, {24, -30, 40, -60, 120}, ...
MATHEMATICA
Table[Table[ -(-1)^(n-k+1) n/(n-k+1), {k, 1, n}] (n-1)!, {n, 1, 12}]
CROSSREFS
KEYWORD
AUTHOR
Wouter Meeussen, Dec 14 2002
STATUS
approved