OFFSET
1,1
COMMENTS
a(n) - a(n-1) is in {1,2,3} for n>=2. Conjecture: a(n)/n -> 9/4.
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
EXAMPLE
As a word, A286490 = 011010011001010010011..., in which 1 is in positions 2,3,5,8,9,12,...
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 11 2017
STATUS
approved