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 A080310 #7 Jan 11 2024 09:40:34 %S A080310 2,6,50,14,402,102,114,30,3218,806,818,206,914,230,242,62,25746,6438, %T A080310 6450,1614,6546,1638,1650,414,7314,1830,1842,462,1938,486,498,126, %U A080310 205970,51494,51506,12878,51602,12902,12914,3230,52370,13094,13106,3278 %N A080310 Rewrite 0->100 in the binary expansion of n (but leaving single zero as zero) and append 10 to the right. %C A080310 Also A080303(n)*4 + 2 for n>0. %F A080310 a(n) = A080303(2*n)/2. %Y A080310 Cf. A080298, A080299. %K A080310 nonn,easy %O A080310 0,1 %A A080310 _Antti Karttunen_, Mar 02 2003