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A127507 Triangle read by rows: T(n,k) = mu(n) where 1<=k<=n and mu=A008683. 1
1, -1, -1, -1, -1, -1, 0, 0, 0, 0, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row sums are A055615(n).

LINKS

Table of n, a(n) for n=1..55.

FORMULA

T = M * Q, as infinite lower triangular matrices; M = mu(n) in the main diagonal and the rest zeros, Q = (1; 1, 1; 1, 1, 1;...).

EXAMPLE

First few rows of the triangle are:

1;

-1, -1;

-1, -1, -1;

0, 0, 0, 0;

-1, -1, -1, -1, -1;

1, 1, 1, 1, 1, 1;

...

CROSSREFS

Cf. A008683, A055615.

Sequence in context: A071041 A082551 A152614 * A204441 A127247 A127244

Adjacent sequences:  A127504 A127505 A127506 * A127508 A127509 A127510

KEYWORD

tabl,easy,sign

AUTHOR

Gary W. Adamson, Jan 17 2007

STATUS

approved

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Last modified February 24 04:36 EST 2020. Contains 332197 sequences. (Running on oeis4.)