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A366140 Fixed points of the binary rotations A336953 and A366139: numbers k >= 0 such that A336953(k) = A366139(k) = k. 3

%I #21 Oct 04 2023 10:01:38

%S 0,1,2,3,6,7,8,10,12,15,20,25,30,31,36,42,45,48,54,60,63,70,77,84,91,

%T 98,105,112,119,126,127,128,136,144,152,160,168,170,176,184,192,200,

%U 204,208,216,224,232,240,248,255,261,270,279,288,297,306,315,324,333

%N Fixed points of the binary rotations A336953 and A366139: numbers k >= 0 such that A336953(k) = A366139(k) = k.

%C If a number is a fixed point of A336953, then it's also a fixed point of A366139, and vice versa.

%C k is a term iff A302291(k)|k.

%H Paolo Xausa, <a href="/A366140/b366140.txt">Table of n, a(n) for n = 1..10000</a>

%t A366140Q[n_]:=FromDigits[RotateLeft[IntegerDigits[n,2],n],2]==n;

%t Select[Range[0,500],A366140Q]

%Y Cf. A302291, A336953, A366139.

%K nonn,base,easy

%O 1,3

%A _Paolo Xausa_, Sep 30 2023

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Last modified July 19 22:26 EDT 2024. Contains 374440 sequences. (Running on oeis4.)