OFFSET
1,1
COMMENTS
Conjecture: -2 < n*r - a(n) < 4 for n >= 1, where r = 1+sqrt(3).
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = 2*A026367(n).
EXAMPLE
As a word, A284851 = 010100..., in which 1 is in positions 2,4,8,10,...
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Apr 15 2017
STATUS
approved