OFFSET
0,8
COMMENTS
Row sums are A186025.
FORMULA
T(n,k)=if(k<n, -binomial(n+k-1,n-k-1), if(k=n,1,0)).
EXAMPLE
Triangle begins
1,
-1, 1,
-1, -1, 1,
-1, -3, -1, 1,
-1, -6, -5, -1, 1,
-1, -10, -15, -7, -1, 1,
-1, -15, -35, -28, -9, -1, 1,
-1, -21, -70, -84, -45, -11, -1, 1,
-1, -28, -126, -210, -165, -66, -13, -1, 1,
-1, -36, -210, -462, -495, -286, -91, -15, -1, 1,
-1, -45, -330, -924, -1287, -1001, -455, -120, -17, -1, 1
CROSSREFS
KEYWORD
AUTHOR
Paul Barry, Feb 10 2011
STATUS
approved