



3, 4, 7, 8, 11, 12, 15, 16, 17, 18, 19, 20, 23, 24, 27, 28, 29, 30, 31, 32, 35, 36, 39, 40, 43, 44, 47, 48, 51, 52, 55, 56, 57, 58, 59, 60, 63, 64, 67, 68, 69, 70, 71, 72, 75, 76, 79, 80, 83, 84, 87, 88, 91, 92, 95, 96, 97, 98, 99, 100, 103, 104, 107, 108
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OFFSET

1,1


COMMENTS

Conjecture: a(n)/n > (1+sqrt(5))/2 = golden ratio (A001622).


LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000


EXAMPLE

As a word, A285501 = 00110011..., in which 1 is in positions 3,4,7,8,11,...


MATHEMATICA

s = Nest[Flatten[# /. {0 > {1, 1}, 1 > {0, 0, 1, 1}}] &, {0}, 8] (* A285501 *)
Flatten[Position[s, 0]] (* A285502 *)
Flatten[Position[s, 1]] (* A285503 *)


CROSSREFS

Cf. A001622, A285501, A285503, A285504.
Sequence in context: A187582 A288553 A295771 * A327221 A014601 A154708
Adjacent sequences: A285500 A285501 A285502 * A285504 A285505 A285506


KEYWORD

nonn,easy


AUTHOR

Clark Kimberling, Apr 30 2017


STATUS

approved



