OFFSET
0,32
COMMENTS
Row sums (and fourth column) are A124753.
EXAMPLE
Triangle begins
1,
0, 1,
0, 0, 1,
0, 0, 0, 1,
0, 0, 0, 1, 1,
0, 0, 0, 1, 1, 1,
0, 0, 0, 1, 1, 1, 1,
0, 0, 0, 2, 2, 2, 2, 1,
0, 0, 0, 3, 3, 3, 3, 2, 1,
0, 0, 0, 4, 4, 4, 4, 3, 2, 1,
0, 0, 0, 9, 9, 9, 9, 7, 5, 3, 1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Paul Barry, Nov 06 2006
STATUS
approved