A022965 a(n) = 9-n.

9, 8, 7, 6, 5, 4, 3, 2, 1, 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23, -24, -25, -26, -27, -28, -29, -30, -31, -32, -33, -34, -35, -36, -37, -38, -39, -40, -41, -42, -43, -44, -45, -46, -47, -48, -49, -50, -51

Offset: 0

Author

N. J. A. Sloane

Keywords

• sign
• easy

Links

• Tanya Khovanova, Recursive Sequences.
• Index entries for linear recurrences with constant coefficients, signature (2,-1).

Crossrefs

The negative of A023451.

Cf. A022958 - A022995.

Programs

Mathematica

9 - Range[0, 100] (* Paolo Xausa, Jul 28 2024 *)

Formula

G.f.: ( 9-10*x ) / ( (x-1)^2 ). - R. J. Mathar, Aug 26 2015