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 A085183 #4 Jul 29 2017 13:25:48 %S A085183 0,1,2,5,6,9,10,12,21,22,25,26,28,37,38,41,42,44,49,50,52,56,85,86,89, %T A085183 90,92,101,102,105,106,108,113,114,116,120,149,150,153,154,156,165, %U A085183 166,169,170,172,177,178,180,184,197,198,201,202,204,209,210,212,216,225 %N A085183 a(n) = A053645(A057520(n)), i.e., the terms of A014486 without their most significant bit (1) and the least significant bit (0). %Y A085183 Same sequence in base 4: A085184. %K A085183 nonn %O A085183 1,3 %A A085183 _Antti Karttunen_, Jun 14 2003