OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (0,0,0,4).
PROG
(PARI) a(n)=[1, 2, 2, 1][n%4+1]*4^(n\4) \\ Charles R Greathouse IV, Oct 17 2013
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Paul Curtz, Apr 21 2008
EXTENSIONS
More terms from Charles R Greathouse IV, Oct 17 2013
STATUS
approved