



2, 4, 6, 7, 8, 9, 11, 12, 13, 16, 18, 20, 22, 23, 24, 25, 27, 28, 29, 32, 34, 36, 38, 39, 40, 41, 43, 44, 45, 48, 49, 50, 51, 54, 55, 56, 57, 60, 61, 62, 63, 66, 68, 70, 72, 73, 74, 75, 77, 78, 79, 82, 83, 84, 85, 88, 89, 90, 91, 94, 96, 98, 100, 101, 102
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OFFSET

1,1


COMMENTS

Conjecture: 1 < n*r  a(n) < 1 for n>=1, where r = 1 + sqrt(1/3).


LINKS

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


EXAMPLE

As a word, A285136 = 10101000010..., in which 0 is in positions 2,4,6,7,...


MATHEMATICA

s = Nest[Flatten[# /. {0 > {1, 0}, 1 > {0, 0, 0, 1}}] &, {0}, 11]; (* A285136 *)
Flatten[Position[s, 0]]; (* A285137 *)
Flatten[Position[s, 1]]; (* A285138 *)


CROSSREFS

Cf. A285133, A285136, A285138.
Sequence in context: A229785 A101616 A322678 * A047295 A039045 A050481
Adjacent sequences: A285134 A285135 A285136 * A285138 A285139 A285140


KEYWORD

nonn,easy


AUTHOR

Clark Kimberling, Apr 20 2017


STATUS

approved



