



2, 3, 4, 5, 7, 8, 9, 11, 12, 13, 15, 16, 17, 20, 21, 22, 23, 25, 26, 27, 29, 30, 31, 34, 35, 36, 37, 39, 40, 41, 43, 44, 45, 48, 49, 50, 51, 53, 54, 55, 57, 58, 59, 62, 64, 65, 66, 67, 69, 70, 71, 73, 74, 75, 77, 78, 79, 82, 83, 84, 85, 87, 88, 89, 91, 92
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OFFSET

1,1


COMMENTS

Conjecture: 1 < n*r  a(n) < 3 for n >= 1, where r = 2 + sqrt(2).


LINKS

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


EXAMPLE

As a word, A284938 = 011110..., in which 1 is in positions 12,3,4,5,7,...


MATHEMATICA

s = Nest[Flatten[# /. {0 > {0, 1}, 1 > {1, 1, 1, 0}}] &, {0}, 6] (* A284944 *)
Flatten[Position[s, 0]] (* A284945 *)
Flatten[Position[s, 1]] (* A284946 *)


CROSSREFS

Cf. A284945, A284946.
Sequence in context: A187681 A107750 A196736 * A285901 A246716 A212165
Adjacent sequences: A284943 A284944 A284945 * A284947 A284948 A284949


KEYWORD

nonn,easy


AUTHOR

Clark Kimberling, Apr 18 2017


STATUS

approved



