OFFSET
1,2
COMMENTS
Row sums = 0.
EXAMPLE
First few rows of the triangle are:
1;
2, -2;
2, -2, 0;
3, -4, 0, 1;
2, -2, 0, 1, -1;
4, -6, 0, 1, -1, 2;
2, -2, 0, 1, -1, 2, -2;
...
CROSSREFS
KEYWORD
AUTHOR
Gary W. Adamson, Jan 14 2007
STATUS
approved