OFFSET
1,2
COMMENTS
a(n) - a(n-1) is in {1,2,3,5,6} for n>=2. Conjecture: a(n)/n -> 3.
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
EXAMPLE
As a word, A286487 = 01101001111101111001..., in which 0 is in positions 1,4,6,7,13,18,...
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 10 2017
STATUS
approved