A023481 n-39.

-39, -38, -37, -36, -35, -34, -33, -32, -31, -30, -29, -28, -27, -26, -25, -24, -23, -22, -21, -20, -19, -18, -17, -16, -15, -14, -13, -12, -11, -10, -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

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

Cf. A256958, A001057, A000027, A001477, A023443, ..., A023480, A023482, A022958, ..., A022996.

Programs

Maple

A023481 := n -> n-39; # M. F. Hasler, Apr 18 2015

Mathematica

Range[0,60]-39 (* M. F. Hasler, Apr 18 2015 *)

PARI

a(n)=n-39 \\ Charles R Greathouse IV, Oct 07 2015

Formula

a(n) = -A022995(n). G.f.: (-39 + 40*x)/(1 - x)^2. - M. F. Hasler, Apr 18 2015