OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (81).
FORMULA
MATHEMATICA
3^(4*Range[0, 20]+3) (* or *) NestList[81*#&, 27, 20] (* Harvey P. Dale, May 28 2019 *)
PROG
(Magma) [3^(4*n+3): n in [0..20]]; // Vincenzo Librandi, Jun 27 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved