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A284852 Positions of 0 in A284851; complement of A284853. 3
1, 3, 5, 6, 7, 9, 11, 12, 13, 15, 17, 19, 21, 22, 23, 25, 27, 28, 29, 31, 33, 35, 37, 38, 39, 41, 43, 44, 45, 47, 49, 50, 51, 53, 55, 56, 57, 59, 61, 63, 65, 66, 67, 69, 71, 72, 73, 75, 77, 79, 81, 82, 83, 85, 87, 88, 89, 91, 93, 94, 95, 97, 99, 100, 101 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

LINKS

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

EXAMPLE

As a word, A284851 = 010100..., in which 0 is in positions 1,3,5,6,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {0, 1, 0, 0}}] &, {0}, 6] (* A284851 *)

Flatten[Position[s, 0]]  (* A284852 *)

Flatten[Position[s, 1]]  (* A284853 *)

CROSSREFS

Cf. A284851, A284853.

Sequence in context: A232744 A284015 A286908 * A285627 A320472 A064802

Adjacent sequences:  A284849 A284850 A284851 * A284853 A284854 A284855

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 15 2017

STATUS

approved

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Last modified October 20 04:37 EDT 2019. Contains 328247 sequences. (Running on oeis4.)