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A285256
Positions of 0 in A285255; complement of A285257.
3
1, 4, 6, 8, 9, 12, 13, 16, 18, 20, 21, 24, 25, 28, 30, 31, 34, 36, 38, 39, 42, 43, 46, 48, 49, 52, 54, 56, 57, 60, 61, 64, 66, 67, 70, 72, 73, 76, 78, 80, 81, 84, 85, 88, 90, 92, 93, 96, 97, 100, 102, 103, 106, 108, 109, 112, 114, 116, 117, 120, 121, 124
OFFSET
1,2
COMMENTS
Conjecture: 2n - a(n) is in {0,1} for n>=1.
See the comments of A285250 for a proof of this conjecture. - Michel Dekking, Oct 07 2020
LINKS
EXAMPLE
As a word, A285255 = 011010..., in which 0 is in positions 1,4,6,8,9,...
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 1, 1, 0}}] &, {0}, 12]; (* A285255 *)
Flatten[Position[s, 0]]; (* A285256 *)
Flatten[Position[s, 1]]; (* A285257 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Apr 23 2017
STATUS
approved