A115526 Inverse of number triangle A115524.

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

Offset: 0

Author

Paul Barry, Jan 25 2006

Keywords

• sign
• tabl

Comments

Row sums are number of zeros in binary expansion of n+2, that is, A023416(n+2) [conjecture].

Examples

			Triangle begins
1,
1, -1,
1, 0, 1,
1, 0, 1, -1,
1, -1, 0, 0, 1,
1, -1, 0, 0, 1, -1,
1, 0, 1, 0, 0, 0, 1,
1, 0, 1, 0, 0, 0, 1, -1,
1, 0, 1, -1, 0, 0, 0, 0, 1,
1, 0, 1, -1, 0, 0, 0, 0, 1, -1,
1, -1, 0, 0, 1, 0, 0, 0, 0, 0, 1,
1, -1, 0, 0, 1, 0, 0, 0, 0, 0, 1, -1,
1, -1, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 1,
1, -1, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 1, -1,
1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1,
1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, -1,
1, 0, 1, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 1