OFFSET
1
LINKS
FORMULA
a(n) = A285384(n) for n>=2.
Conjecture: a(n) = A035263(n-1). - R. J. Mathar, May 08 2017
EXAMPLE
0 -> 11-> 0101 -> 11011101 -> 0101110101011101 ->
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {0, 1}}] &, {0}, 10] (* A285383 *)
Flatten[Position[s, 0]] (* A171947 *)
Flatten[Position[s, 1]] (* A171946 *)
SubstitutionSystem[{0->{1, 1}, 1->{0, 1}}, {0, 1}, {6}][[1]] (* Harvey P. Dale, Oct 01 2024 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Apr 26 2017
STATUS
approved