A135913 2+4*2^n-3^n.

5, 7, 9, 7, -15, -113, -471, -1673, -5535, -17633, -54951, -168953, -515055, -1561553, -4717431, -14217833, -42784575, -128615873, -386371911, -1160164313, -3482590095, -10451964593, -31364282391, -94109624393, -282362427615, -847154391713, -2541597392871, -7625060614073

Offset

0,1

References

G. S. Lueker, Some techniques for solving recurrences, Computing Surveys, 12 (1980), 419-436.

Links

Table of n, a(n) for n=0..27.

Index entries for linear recurrences with constant coefficients, signature (6, -11, 6).

Formula

a(0)=5, a(1)=7, a(2)=9, a(n)=6*a(n-1)-11*a(n-2)+6*a(n-3). - Harvey P. Dale, Sep 23 2012

Mathematica

Table[2+4*2^n-3^n, {n, 0, 30}] (* or *) LinearRecurrence[{6, -11, 6}, {5, 7, 9}, 30] (* Harvey P. Dale, Sep 23 2012 *)

Crossrefs

Sequence in context: A276483 A021637 A177705 * A308713 A109352 A228578

Adjacent sequences: A135910 A135911 A135912 * A135914 A135915 A135916

Keyword

sign

Author

N. J. A. Sloane, Mar 07 2008

Status

approved