OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (18,-83,66).
FORMULA
G.f.: 1/(1-11*x)-1/(1-6*x)+1/(1-x). E.g.f.: e^(11*x)-e^(6*x)+e^x.
a(n)=17*a(n-1)-66*a(n-2)+50 with a(0)=1, a(1)=6 [From Vincenzo Librandi, Jul 21 2010]
MATHEMATICA
Table[11^n-6^n+1, {n, 0, 30}] (* or *) LinearRecurrence[{18, -83, 66}, {1, 6, 86}, 30] (* Harvey P. Dale, Apr 11 2023 *)
PROG
(PARI) a(n)= 11^n-6^n+1 \\ Charles R Greathouse IV, Dec 22 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Mohammad K. Azarian, Jan 31 2009
STATUS
approved