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A127474
Triangle, square of A054522.
1
1, 2, 1, 3, 0, 4, 4, 3, 0, 4, 5, 0, 0, 0, 16, 6, 3, 8, 0, 0, 4, 7, 0, 0, 0, 0, 0, 36, 8, 7, 0, 12, 0, 0, 0, 16, 9, 0, 16, 0, 0, 0, 0, 0, 36, 10, 5, 0, 0, 32, 0, 0, 0, 0, 16
OFFSET
1,2
COMMENTS
Right border = A127473, squares of phi(n) terms. Row sums = A057660: (1, 3, 7, 11, 21, ...).
FORMULA
(A054522)^2 as an infinite lower triangular matrix.
EXAMPLE
First few rows of the triangle:
1;
2, 1;
3, 0, 4;
4, 3, 0, 4;
5, 0, 0, 0, 16;
6, 3, 8, 0, 0, 4;
7, 0, 0, 0, 0, 0, 36;
8, 7, 0, 12, 0, 0, 0, 16;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jan 15 2007
STATUS
approved