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

Author

Gary W. Adamson, Jan 14 2007

Keywords

• tabl
• sign

Comments

Row sums give A008683.

Examples

			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.

Extensions

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

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