OFFSET
1,2
COMMENTS
Conjecture: a(n)/n -> (1 + sqrt(17))/4.
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
EXAMPLE
As a word, A285657 = 101111101..., in which 1 is in positions 1,3,4,5,6,7,9,...
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 01 2017
STATUS
approved