A112085 First differences of A112055.

1, 2, 2, 1, 4, 1, 2, 2, 1, 2, 2, 1, 4, 1, 2, 2, 1, 2, 2, 1, 2, 2, 1, 4, 1, 2, 2, 1, 2, 2, 1, 4, 1, 2, 2, 1, 2, 2, 1, 2, 2, 1, 4, 1, 2, 2, 1, 2, 2, 1, 4, 1, 2, 2, 1, 4, 1, 2, 2, 1, 4, 1, 2, 2, 1, 2, 2, 1, 4, 1, 2, 2, 1, 4, 1, 2, 2, 1, 4, 1, 2, 2, 1, 2, 2, 1, 4, 1, 2, 2, 1, 2, 2, 1, 2, 2, 1, 4, 1, 2, 2, 1

Offset: 1

Author

Antti Karttunen, Aug 28 2005

Keywords

• nonn

Comments

Will other terms than 1, 2 or 4 ever appear? Is there genuine periodicity?

Formula

a(n) = A112055(n+1)-A112055(n).