



1, 2, 5, 6, 9, 10, 11, 12, 13, 14, 17, 18, 21, 22, 23, 24, 25, 26, 29, 30, 33, 34, 37, 38, 41, 42, 45, 46, 49, 50, 51, 52, 53, 54, 57, 58, 61, 62, 63, 64, 65, 66, 69, 70, 73, 74, 77, 78, 81, 82, 85, 86, 89, 90, 91, 92, 93, 94, 97, 98, 101, 102, 103, 104, 105
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OFFSET

1,2


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, A285661 = 110011001..., in which 1 is in positions 1,2,5,6,9,...


MATHEMATICA

s = Nest[Flatten[# /. {0 > {1, 1}, 1 > {1, 1, 0, 0}}] &, {0}, 9] (* A285661 *)
Flatten[Position[s, 0]] (* A285662 *)
Flatten[Position[s, 1]] (* A285663 *)


CROSSREFS

Cf. A285662, A285663.
Sequence in context: A269472 A244272 A007573 * A143909 A284507 A284492
Adjacent sequences: A285660 A285661 A285662 * A285664 A285665 A285666


KEYWORD

nonn,easy


AUTHOR

Clark Kimberling, May 02 2017


STATUS

approved



