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 A032539 #16 Jun 23 2020 06:15:12 %S A032539 1,1,1,2,2,2,1,2,2,2,2,2,2,2,2,6,5,5,5,5,5,5,4,5,4,4,4,4,4,4,4,6,6,5, %T A032539 5,5,5,5,5,5,5,5,5,5,5,5,4,6,6,6,5,5,5,5,5,5,5,5,5,5,5,5,5,15,15,15, %U A032539 14,14,14,14,14,14,13,13,13,13,13,13,13,13,13,13,13,13,13,12,12 %N A032539 Integer part of decimal 'base-4 looking' numbers divided by their actual base-4 values. %F A032539 a(n) = floor(A007090(n)/n). %Y A032539 Cf. A007090, A032540, A032541. See also A032532 for explanation. %K A032539 nonn,easy,base %O A032539 1,4 %A A032539 _Patrick De Geest_, Apr 15 1998 %E A032539 Offset corrected by _Sean A. Irvine_, Jun 22 2020