A145593 Inverse binomial transform of A144472.

-1, 3, 4, -7, 24, -47, 104, -207, 424, -847, 1704, -3407, 6824, -13647, 27304, -54607, 109224, -218447, 436904, -873807, 1747624, -3495247, 6990504, -13981007, 27962024, -55924047, 111848104, -223696207, 447392424, -894784847

Offset: 0

Author

Paul Curtz, Oct 14 2008

Keywords

• sign

Comments

From the third entry on, the last digits have period 2.

Links

• Harvey P. Dale, Table of n, a(n) for n = 0..1000
• Index entries for linear recurrences with constant coefficients, signature (-2, 1, 2).

Programs

Mathematica

LinearRecurrence[{-2,1,2},{-1,3,4},30] (* Harvey P. Dale, May 11 2024 *)

Formula

G.f.: (1-x-11x^2)/((1+2x)(1+x)(x-1)). - R. J. Mathar, Oct 24 2008

a(n)=(5*2^n/3-9/2)*(-1)^n+11/6. - R. J. Mathar, Oct 24 2008

Extensions

Extended by R. J. Mathar, Oct 24 2008