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 A136492 #7 Apr 05 2024 08:19:33 %S A136492 3,5,6,7,9,10,11,12,13,14,15,17,18,19,20,21,22,23,24,25,26,28,29,30, %T A136492 31,33,34,35,36,37,38,39,40,42,43,44,45,46,47,48,49,50,51,52,53,55,56, %U A136492 57,58,59,60,61,62,63,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81 %N A136492 Complement of A018826. %t A136492 Select[Range[0, 100], StringFreeQ[IntegerString[#^2, 2], IntegerString[#, 2]] &] (* _Paolo Xausa_, Apr 05 2024 *) %Y A136492 Cf. A018826, A136491. %K A136492 nonn,easy,base %O A136492 1,1 %A A136492 _Reinhard Zumkeller_, Jan 01 2008