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A155091
Triangle read by rows. Signed version of A145362. Main diagonal positive, rest of the nonzero terms negative.
1
1, -1, 1, 0, -1, 1, 0, -1, -1, 1, 0, 0, -1, -1, 1, 0, 0, -1, -1, -1, 1, 0, 0, 0, -1, -1, -1, 1, 0, 0, 0, -1, -1, -1, -1, 1, 0, 0, 0, 0, -1, -1, -1, -1, 1, 0, 0, 0, 0, -1, -1, -1, -1, -1, 1, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1, 1, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1, -1, 1, 0, 0, 0, 0, 0, 0, -1, -1
OFFSET
1,1
COMMENTS
Matrix inverse of this triangle is A155092.
EXAMPLE
Table begins:
1,
-1,1,
0,-1,1,
0,-1,-1,1,
0,0,-1,-1,1,
0,0,-1,-1,-1,1,
0,0,0,-1,-1,-1,1,
0,0,0,-1,-1,-1,-1,1,
0,0,0,0,-1,-1,-1,-1,1,
0,0,0,0,-1,-1,-1,-1,-1,1,
CROSSREFS
Cf. A145362.
Sequence in context: A163804 A181653 A343159 * A145362 A261092 A285960
KEYWORD
sign,tabl
AUTHOR
Mats Granvik, Jan 20 2009
STATUS
approved