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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 (list; table; graph; refs; listen; history; text; internal format)
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.

LINKS

Table of n, a(n) for n=1..111.

CROSSREFS

Sequence in context: A157926 A131377 A077049 * A089885 A143242 A136442

Adjacent sequences:  A124892 A124893 A124894 * A124896 A124897 A124898

KEYWORD

sign,tabl

AUTHOR

Reinhard Zumkeller, Nov 12 2006

STATUS

approved

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Last modified August 28 20:16 EDT 2015. Contains 261164 sequences.