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

0,4

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).

Links

Table of n, a(n) for n=0..100.

Crossrefs

Cf. A010060, A076826, A102563, A102564.

Sequence in context: A336922 A276469 A272356 * A076826 A137178 A101666

Adjacent sequences: A102562 A102563 A102564 * A102566 A102567 A102568

Keyword

easy,sign

Author

Paul Barry, Jan 14 2005

Status

approved