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A128408
Triangle read by rows: A128407 * A051731 as infinite lower triangular matrices.
4
1, -1, -1, -1, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, -1, 1, 1, 1, 0, 0, 1, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1
OFFSET
1,1
COMMENTS
Left and right borders = mu(n), A008683. Row sums = A008966: (1, -2, -2, 0, -2, 4, -2, 0, 0, 4, ...). A128408 * [1,2,3,...] = A063441: (1, -3, -4, 0, -6, 12, ...). A054524 = A051731 * A128407.
EXAMPLE
First few rows of the triangle:
1;
-1, -1;
-1, 0, -1;
0, 0, 0, 0;
-1, 0, 0, 0, -1;
1, 1, 1, 0, 0, 1;
...
CROSSREFS
KEYWORD
tabl,sign
AUTHOR
Gary W. Adamson, Mar 01 2007
EXTENSIONS
a(45) = 0 inserted and more terms from Georg Fischer, Jun 05 2023
STATUS
approved