OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..2000
Index entries for linear recurrences with constant coefficients, signature (3, -2).
FORMULA
a(n) = 2^(n-1)+2, n>2.
MATHEMATICA
Join[{2, 3}, Rest[2^Range[40]+2]] (* Harvey P. Dale, Sep 19 2011 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Ray Chandler, Nov 21 2003
STATUS
approved