A085243 a(n) = A085238(n+1) - A085238(n).

0, 1, 1, -1, 2, -1, 2, 1, -2, 3, -2, 3, 1, -3, 4, 1, -4, 5, -4, 5, 1, -5, 6, -5, 6, 1, -6, 7, 1, -7, 8, -7, 8, 1, -8, 9, -8, 9, 1, -9, 10, -9, 10, 1, -10, 11, 1, -11, 12, -11, 12, 1, -12, 13, -12, 13, 1, -13, 14, 1, -14, 15, -14, 15, 1, -15, 16, -15, 16, 1, -16, 17, -16, 17

Offset: 1

Author

Reinhard Zumkeller, Jun 22 2003

Keywords

• sign

Crossrefs

Cf. A085238.