OFFSET
1,2
COMMENTS
Absolute values of nonzero elements appear to be as in Pascal's triangle. The table consists mostly of zeros.
EXAMPLE
Table begins:
1;
-2, 1;
-3, 3, 1;
0, 6, -4, 1;
-5, -10, -10, 5, 1;
6, 15, 20, 15, -6, 1;
-7, -21, 0, 0, -21, 7, 1;
0, 0, 0, 0, -56, 28, -8, 1;
0, 0, 0, 126, 126, 84, -36, 9, 1;
10, 0, 0, -210, -252, -210, 0, 45, -10, 1;
CROSSREFS
KEYWORD
sign,tabl
AUTHOR
Mats Granvik, Jul 16 2009
STATUS
approved