[seqfan] Re: Divisibility sequences

[N. J. A. Sloane]

Actually, for an irregular triangle, it is better to
use the keyword "tabf" (funny triangle)
and simply read the coefficiants across the rows.  So your example 

 1  0  0  0  0  0  0 . . .
 1  0  0  0  0  0  0
-1  0  0  0  0  0  0
 1  1  0  0  0  0  0
-1 -1  1  0  0  0  0
-1 -1  0 -1  0  0  0
 0 -2 -3  0  0  0  0
 1  3 -3 -1  1  0  0 . . .
 . . .
 . . .

would becomne the sequence

1 1 -1 1 1  -1 -1 1  -1 -1 0 -1 ...

See A008316, coeffts of Legenre polynomials, for a classical example.

 Best regards
 			 Neil