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A127442 Triangle read by rows: row n consists of 1 followed by initial n-1 terms of A127440. 1
1, 1, -2, 1, -2, 0, 1, -2, 0, 1, 1, -2, 0, 1, -1, 1, -2, 0, 1, -1, 2, 1, -2, 0, 1, -1, 2, -2, 1, -2, 0, 1, -1, 2, -2, 1, 1, -2, 0, 1, -1, 2, -2, 1, 0, 1, -2, 0, 1, -1, 2, -2, 1, 0, 1, 1, -2, 0, 1, -1, 2, -2, 1, 0, 1, -2, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row sums = mu(n), A008683.

LINKS

Table of n, a(n) for n=1..67.

EXAMPLE

Triangle begins:

1

1 -2,

1 -2, 0,

1 -2, 0, 1,

1 -2, 0, 1, -1,

1 -2, 0, 1, -1, 2,

1 -2, 0, 1, -1, 2, -2,

1 -2, 0, 1, -1, 2, -2, 1,

1 -2, 0, 1, -1, 2, -2, 1, 0,

1 -2, 0, 1, -1, 2, -2, 1, 0, 1,

1 -2, 0, 1, -1, 2, -2, 1, 0, 1, -2,

CROSSREFS

Cf. A127440 = (1, -2, 0, 1, -1, 2, -2, ...) = first differences of mu(n), A008683

Cf. A008683.

Sequence in context: A277729 A057985 A135387 * A115628 A114002 A114004

Adjacent sequences:  A127439 A127440 A127441 * A127443 A127444 A127445

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Jan 14 2007

EXTENSIONS

One term corrected by T. D. Noe, Feb 08 2007

Edited, corrected and extended by N. J. A. Sloane, Mar 01 2007

STATUS

approved

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Last modified October 19 05:08 EDT 2018. Contains 316336 sequences. (Running on oeis4.)