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 A110766 #16 Mar 29 2025 18:39:14 %S A110766 3,3,1,3,4,1,1,3,5,4,9,1,2,1,6,3,5,5,3,4,5,9,8,1,9,2,7,1,9,6,3,3,2,5, %T A110766 3,5,8,3,4,4,6,5,2,9,6,8,4,1,3,9,3,2,8,7,3,1,2,9,7,6,9,3,5,3,0,2,2,5, %U A110766 8,3,8,5,4,8,1,3,9,4,7,4,1,6,6,5,9 %N A110766 Fractalization of Pi. %C A110766 Self-descriptive sequence: even terms are the sequence itself, odd terms are the digits of the decimal expansion of Pi. %H A110766 Reinhard Zumkeller, <a href="/A110766/b110766.txt">Table of n, a(n) for n = 1..10000</a> %H A110766 Clark Kimberling, <a href="http://faculty.evansville.edu/ck6/integer/fractals.html">Fractal sequences</a>. %F A110766 a(2n) = a(n); a(2n-1) = digits of Pi. %o A110766 (Haskell) %o A110766 import Data.List (transpose) %o A110766 a110766 n = a110766_list !! (n-1) %o A110766 a110766_list = concat $ transpose [a000796_list, a110766_list] %o A110766 -- _Reinhard Zumkeller_, Aug 29 2014 %Y A110766 Cf. A000796 (Pi), A003602. %Y A110766 Cf. A110779 (of e), A110812 (of sqrt 2), A382130 (of phi). %K A110766 easy,nonn,base %O A110766 1,1 %A A110766 _Alexandre Wajnberg_, Sep 15 2005 %E A110766 a(85) corrected and formula fixed by _Reinhard Zumkeller_, Aug 29 2014