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A284941 Positions of 1 in A284939; complement of A080580. 3
2, 3, 4, 6, 7, 8, 10, 11, 12, 14, 16, 17, 18, 20, 21, 22, 24, 25, 26, 28, 30, 31, 32, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 50, 51, 52, 54, 55, 56, 58, 59, 60, 62, 64, 65, 66, 68, 69, 70, 72, 73, 74, 76, 78, 79, 80, 82, 83, 84, 86, 87, 88, 90, 92, 93 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture:  -1 < n*sqrt(2) - a(n) < 2 for n >= 1.

LINKS

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

EXAMPLE

As a word, A284939 = 0111011101..., in which 1 is in positions 2,3,4,6,7,8,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 1, 0, 1}}] &, {0}, 6] (* A284939 *)

Flatten[Position[s, 0]]  (* A080580 *)

Flatten[Position[s, 1]]  (* A284941 *)

CROSSREFS

Cf. A284939, A080580.

Sequence in context: A188262 A099619 A027564 * A354767 A351714 A248559

Adjacent sequences:  A284938 A284939 A284940 * A284942 A284943 A284944

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 18 2017

STATUS

approved

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Last modified June 30 06:00 EDT 2022. Contains 354914 sequences. (Running on oeis4.)