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 A004779 #17 Oct 26 2023 23:22:11 %S A004779 8,16,17,24,32,33,34,35,40,48,49,56,64,65,66,67,68,69,70,71,72,80,81, %T A004779 88,96,97,98,99,104,112,113,120,128,129,130,131,132,133,134,135,136, %U A004779 137,138,139,140,141,142,143,144,145,152,160,161,162,163,168 %N A004779 Binary expansion contains 3 adjacent 0's. %H A004779 Daniel Starodubtsev, <a href="/A004779/b004779.txt">Table of n, a(n) for n = 0..10000</a> %H A004779 <a href="/index/Ar#2-automatic">Index entries for 2-automatic sequences</a>. %F A004779 a(n) ~ n. - _Charles R Greathouse IV_, Oct 23 2015 %o A004779 (PARI) is(n)=while(n>7,if(bitand(n,7)==0,return(1));n>>=1); 0 \\ _Charles R Greathouse IV_, Feb 11 2017 %Y A004779 Complement of A003796. %Y A004779 Cf. A004753, A004781, A136037. %K A004779 nonn,easy,base %O A004779 0,1 %A A004779 _N. J. A. Sloane_