OFFSET
1,2
COMMENTS
Conjecture: a(n)/n -> 2.
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
EXAMPLE
As a word, A285617 = 1000111111100010001001..., in which 1 is in positions 1,5,6,7,8,...
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 01 2017
STATUS
approved