OFFSET
1,5
COMMENTS
FORMULA
EXAMPLE
First few terms of the triangle:
1;
1, 0;
1, -2, 0;
1, 0, -3, 0;
1, -2, -3, 0, 0;
1, 0, 0, 0, -5, 0;
1, -2, -3, 0, -5, 6, 0;
1, 0, -3, 0, -5, 0, -7, 0;
...
Example: row 7 = (1, -2, -3, 0, -5, 6, 0). We take row 7 of triangle A127368 which records the relative primes of 7 as (1, 2, 3, 4, 5, 6, 0). Applying the termwise product of the first 7 terms of mu(k): (1, -1, -1, 0, -1, 1, -1), we get (1, -2, -3, 0, -5, 6, 0), noting that the "4" has been deleted.
CROSSREFS
KEYWORD
tabl,sign
AUTHOR
Gary W. Adamson, Aug 30 2008
EXTENSIONS
Partially edited by N. J. A. Sloane, Jan 05 2009
a(66) = 0 inserted by Georg Fischer, Jun 05 2023
STATUS
approved