OFFSET
0,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (111, -1110, 1000).
FORMULA
a(n) = 111*a(n-1) -1110*a(n-2) +1000*a(n-3).
G.f.: -(19-1190*x+9190*x^2)/((x-1) * (100*x-1) * (10*x-1)). - R. J. Mathar, Feb 14 2010
MAPLE
MATHEMATICA
LinearRecurrence[{111, -1110, 1000}, {19, 919, 90109}, 20] (* Harvey P. Dale, Oct 24 2011 *)
PROG
(PARI) a(n) = 9+10^n+9*100^n; \\ Michel Marcus, Mar 08 2014
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jason Earls, Dec 05 2009
STATUS
approved