A127442 Triangle read by rows: row n consists of 1 followed by initial n-1 terms of A127440.

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

Offset

1,3

Comments

Row sums give 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 (first differences of mu(n), A008683).

Cf. A008683.

Sequence in context: A057985 A135387 A321104 * A357524 A115628 A114002

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