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A128409
Triangle read by rows: A000012 * A128408 as infinite lower triangular matrices.
1
1, 0, -1, -1, -1, -1, -1, -1, -1, 0, -2, -1, -1, 0, -1, -1, 0, 0, 0, -1, 1, -2, 0, 0, 0, -1, 1, -1, -2, 0, 0, 0, -1, 1, -1, 0, -2, 0, 0, 0, -1, 1, -1, 0, 0, -1, 1, 0, 0, 0, 1, -1, 0, 0, 1, -2, 1, 0, 0, 0, 1, -1, 0, 0, 1, -1, -2, 1, 0, 0, 0, 1, -1, 0, 0, 1, -1, 0, -3, 1, 0, 0, 0, 1, -1, 0, 0, 1, -1, 0, -1
OFFSET
1,11
COMMENTS
Left border = the Mertens sequence: A002321: (1, 0, -1, -1, -2, ...).
Right border = mu(n), A008683: (1, -1, -1, 0, -1, 1, -1, ...).
Row sums = A062563: (1, -1, -3, -3, -5, -1, -3, ...).
EXAMPLE
First few rows of the triangle:
1;
0, -1;
-1, -1, -1;
-1, -1, -1, 0;
-2, -1, -1, 0, -1;
-1, 0, 0, 0, -1, 1;
-2, 0, 0, 0, -1, 1, -1;
...
CROSSREFS
KEYWORD
tabl,sign
AUTHOR
Gary W. Adamson, Mar 01 2007
EXTENSIONS
Previous a(51) = 0 removed and more terms from Georg Fischer, Jun 08 2023
STATUS
approved