OFFSET
0,1
LINKS
Y. Moshe, The density of 0's in recurrence double sequences, J. Number Theory, 103 (2003), 109-121; see Fig. 2.
FORMULA
T(n, k) = T(n-1, k) + T(n-1, k-1) + T(n-2, k) + T(n-2, k-1) + T(n-2, k-2) for n >= 2, k >= 0, with initial conditions specified by first two rows.
EXAMPLE
Triangle begins:
0
1 0
1 1 0
0 1 0 0
1 1 1 1 0
...
CROSSREFS
KEYWORD
AUTHOR
N. J. A. Sloane, Jan 19 2004
EXTENSIONS
Edited and extended by Christian G. Bower, Jan 20 2004
STATUS
approved