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A285658 Positions of 0 in A285657; complement of A285659. 4
2, 8, 12, 16, 20, 24, 30, 34, 38, 44, 48, 52, 58, 62, 66, 72, 76, 80, 86, 90, 94, 98, 102, 108, 112, 116, 122, 126, 130, 136, 140, 144, 148, 152, 158, 162, 166, 172, 176, 180, 186, 190, 194, 198, 202, 208, 212, 216, 222, 226, 230, 236, 240, 244, 248, 252 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture:  a(n)/n -> (5 + sqrt(17))/2.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000 [term a(8731)=39826 -> 39824 and following corrected by Georg Fischer, Jun 04 2020]

EXAMPLE

As a word, A285657 = 101111101..., in which 0 is in positions 2,8,12,16,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {1, 0, 1, 1}}] &, {0}, 10] (* A285657 *)

u = Flatten[Position[s, 0]]  (* A285658 *)

Flatten[Position[s, 1]]   (* A285659 *)

u/2 (* A286043 *)

CROSSREFS

Cf. A285551, A285658, A285659.

Sequence in context: A180634 A139270 A176100 * A284802 A067884 A005880

Adjacent sequences:  A285655 A285656 A285657 * A285659 A285660 A285661

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 01 2017

STATUS

approved

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Last modified September 21 21:32 EDT 2021. Contains 347605 sequences. (Running on oeis4.)