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A124895
Triangle read by rows, 1<=k<=n: T(n,k) = mu(n^2 + k^2) with mu=A008683.
2
-1, -1, 0, 1, -1, 0, -1, 0, 0, 0, 1, -1, 1, -1, 0, -1, 0, 0, 0, -1, 0, 0, -1, 1, 1, 1, 1, 0, 1, 0, -1, 0, -1, 0, -1, 0, 1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 0, -1, 0, 0, 0, -1, 0, -1, 0, 1, 0, -1, -1, 1, -1, -1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 1, 0, -1, -1, 1, 1, 1, 1, 1, -1, 0, -1, -1, -1, 0, -1, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 1, 0, 1, -1, 0, -1, 0, 0
OFFSET
1,1
COMMENTS
T(n,k) = A008683(A070216(n,k));
T(n,1)=A124897(1);T(A049533(n),1)<>0; T(A049532(n),1)=0;
T(n,n) = -A000007(n-1);
A124896(n) = Sum(abs(T(n,k)): 1<=k<=n), row sums of absolute values.
CROSSREFS
Sequence in context: A342991 A285898 A077049 * A089885 A190233 A143242
KEYWORD
sign,tabl
AUTHOR
Reinhard Zumkeller, Nov 12 2006
STATUS
approved