This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A383850 #7 May 14 2025 14:09:22 %S A383850 0,1,3,7,10,15,31,63,127,153,170,204,255,292,365,438,511,1023,2047, %T A383850 2275,2405,2470,2665,2730,2860,3185,3250,3380,3640,4095,8191,16383, %U A383850 32767,34695,34952,35723,36237,36494,37779,38293,38550,39321,39578,40092,41891,42405,42662,43433,43690 %N A383850 Fixed points of A383848 and A383849. %t A383850 A383850Q[k_] := # == RotateLeft[#, Total[#]]& [IntegerDigits[k, 2]]; %t A383850 Select[Range[0, 50000], A383850Q] %Y A383850 Cf. A383848, A383849. %Y A383850 A000225 is a subsequence. %K A383850 nonn,base %O A383850 1,3 %A A383850 _Paolo Xausa_, May 13 2025