OFFSET
1,2
COMMENTS
EXAMPLE
First few rows of the triangle =
1;
-2, 1;
-3, -2, -1;
0, -3, 2, -6;
-5, 0, 3, 12, -7;
6, -5, 0, 18, 14, 3;
-7, 6, 5, 0, 21, -6, 36;
0, -7, -6, 30, 0, -9, -72, 55;
0, 0, 7, -36, 35, 0, -108, -110, -9;
10, 0, 0, 42, -42, -15, 0, -165, 18, -221;
...
Row 4 = (0, -3, 2, -6) = termwise products of (0, -3, -2, 1) and (1, 1, -1, -6) = (0*1, -3*1, -2*-1, 1*(-6)). (0, -3, -2, 1) = the first 4 terms of A055615, n*mu(n), reversed.
(1, 1, -1, 6) = the first 4 terms A144028, shifted.
MAPLE
CROSSREFS
KEYWORD
tabl,sign
AUTHOR
Gary W. Adamson, Sep 07 2008
EXTENSIONS
Entries corrected starting from row 10. - R. J. Mathar, Jan 27 2011
STATUS
approved