

A026368


a(n) = greatest k such that s(k) = n, where s = A026366.


5



3, 6, 11, 14, 19, 22, 25, 28, 33, 36, 41, 44, 47, 50, 55, 58, 63, 66, 71, 74, 79, 82, 85, 88, 93, 96, 101, 104, 107, 110, 115, 118, 123, 126, 131, 134, 139, 142, 145, 148, 153, 156, 161, 164, 167, 170, 175, 178, 183, 186, 189, 192, 197
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OFFSET

1,1


COMMENTS

Complement of the rank transform of the sequence A004526=(1,1,2,2,3,3,4,4,5,5,...). See A187224.
Positions of 0 in the fixed point of the morphism 0>11, 1>110; see A285431. Conjecture: 2 < n*r  a(n) < 4 for n>=1, where r = 2 + sqrt(3).  Clark Kimberling, Apr 29 2017
Also, with an initial 0, appears to be the sequence B' of Ppositions in Fraenkel's (2,1)Wythoff's game. The associated A' sequence is A026367.  N. J. A. Sloane, Oct 20 20221


LINKS

Robbert Fokkink, Gerard Francis Ortega, and Dan Rust, Corner the Empress, arXiv:2204.11805 [math.CO], 2022. See Table 4.


MATHEMATICA

s = Nest[Flatten[# /. {0 > {1, 1}, 1 > {1, 1, 0}}] &, {0}, 13] (* A285431 *)
Flatten[Position[s, 0]] (* A026368 *)
Flatten[Position[s, 1]] (* A026367 *)


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



