OFFSET
0,3
LINKS
Index entries for linear recurrences with constant coefficients, signature (21, -110).
FORMULA
G.f.: x/((1-10x)(1-11x)).
E.g.f.: e^(11*x) - e^(10*x). - Mohammad K. Azarian, Jan 14 2009
a(n) = 11*a(n-1) + 10^(n-1), a(0)=0. - Vincenzo Librandi, Feb 09 2011
a(n) = 21*a(n-1) - 110*a(n-2), a(0)=0, a(1)=1. - Vincenzo Librandi, Feb 09 2011
MATHEMATICA
f[n_]:=11^n-10^n; f[Range[0, 40]] (* Vladimir Joseph Stephan Orlovsky, Feb 14 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved