A081745 a(n) = A080901(n) - n.

1, -2, 2, 6, 3, 7, 11, 8, 12, 9, 13, 17, 14, 18, 22, 19, 23, 20, 17, 21, 18, 22, 26, 23, 27, 31, 28, 32, 29, 33, 37, 34, 38, 42, 39, 36, 33, 30, 27, 24, 21, 25, 29, 26, 30, 34, 31, 35, 32, 36, 40, 37, 41, 45, 42, 46, 43, 40, 44, 41, 45, 42, 39, 36, 40, 37, 34, 31

Offset: 1

Author

N. J. A. Sloane, Apr 08 2003

Keywords

• sign

Formula

Periodic with period 168.