OFFSET
0,1
LINKS
Clark Kimberling, Table of n, a(n) for n = 0..1000
FORMULA
MATHEMATICA
PROG
(PARI) a(n) = (2^n*(3+sqrt(5))+1)\2; \\ Altug Alkan, Oct 08 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Oct 07 2017
STATUS
approved