OFFSET
1,2
COMMENTS
a(n) - a(n-1) is in {1,3} for n>=2, and a(n)/n -> -1 + 2*sqrt(2).
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
EXAMPLE
As a word, A286804 = 11001100111001100111001..., in which 1 is in positions 1,2,5,6,9,...
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 17 2017
STATUS
approved