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 A108202 #23 Nov 27 2020 06:40:53 %S A108202 0,0,1,0,2,1,3,0,4,2,5,1,6,3,7,0,8,4,9,2,1,5,0,1,1,6,1,3,1,7,2,0,1,8, %T A108202 3,4,1,9,4,2,1,1,5,5,1,0,6,1,1,1,7,6,1,1,8,3,1,1,9,7,2,2,0,0,2,1,1,8, %U A108202 2,3,2,4,2,1,3,9,2,4,4,2,2,1,5,1,2,5,6,5,2,1,7,0,2,6,8,1,2,1,9,1,3,7,0,6,3 %N A108202 a(2n) = A007376(n); a(2n+1) = a(n). %C A108202 A sequence, S, consisting of the natural counting digits (A007376) interleaved with S. %C A108202 Fractal sequence (Kimberling-type) based upon the counting digits. %C A108202 Similar to but different from A025480 - _N. J. A. Sloane_, Nov 26 2020. %F A108202 a(n) = A007376(A025480(n)). - _Kevin Ryde_, Nov 21 2020 %Y A108202 First differs from A025480 at a(20). %Y A108202 Even bisection: A007376. %Y A108202 Cf. A003602. %K A108202 base,easy,nonn %O A108202 0,5 %A A108202 Juliette Bruyndonckx and _Alexandre Wajnberg_, Jun 15 2005 %E A108202 More terms from _Joshua Zucker_, May 18 2006 %E A108202 Name made more explicit by _Peter Munn_, Nov 20 2020