OFFSET
0,5
COMMENTS
Each column is convolution of preceding column starting from the all 1's sequence.
FORMULA
T(n,k) = Sum_{i=0..n} T(i,k-1)*T(n-i,k-1) starting with T(n,0) = 1 for n>=0.
EXAMPLE
Rows start:
1, 1, 1, 1, 1, 1, 1,...
1, 2, 4, 8, 16, 32, 64,...
1, 3, 10, 36, 136, 528, 2080,...
1, 4, 20, 120, 816, 5984, 45760,...
1, 5, 35, 330, 3876, 52360, 766480,...
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Henry Bottomley, Feb 19 2004
STATUS
approved