A102565 a(n) = A102563(n) - A102564(n).

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

Offset: 0

Author

Paul Barry, Jan 14 2005

Keywords

• easy
• sign

Comments

It would appear that a(2n+1) = (-2)*A010060(n); a(4n+1) = (-2)*A010060(n); a(8n+1) = (-2)*A010060(n); a(2^n) = 0^n-1; a(2^n+1) = 3*0^n-2; a(2^(n+1)-1) = -(1-(-1)^n).

Crossrefs

Cf. A010060, A076826, A102563, A102564.