A169758 Second differences of A170907.

1, 1, 2, 1, 1, 1, 2, 2, 0, 0, 3, 2, 0, 1, 2, 3, 0, -2, 5, 1, 0, 0, 3, 4, -1, -2, 3, 4, 0, 0, 2, 4, 0, 0, 3, 0, -1, -4, 12, 1, -1, -5, 6, 4, -1, -1, 3, 6, 0, -6, 5, 4, -1, -2, 3, 7, 0, -5, 1, 6, 2, -1, 1, 5, 0, 6, -9, 12, -9, 1, 8, 4, -6, -8, 14, -11, 23, -41, 58, -19, 0, -7, 6, 3, -3, -7, 13, 6, -1, -10, 4, 8, 1, -3, 2, 8, 1, -2, 3, 0

Offset: 0

Author

N. J. A. Sloane, May 06 2010

Keywords

• sign

Comments

I wish I had a recurrence for this sequence!

Crossrefs

Cf. A170907, A169757.