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 A216102 #8 Jan 04 2013 14:57:46
%S A216102 9,3,2,7,6,0,6,8,7,7,5,9,5,9,9,5,3,3,5,6,4,7,5,2,4,3,0,8,2,3,5,7,1,1,
%T A216102 7,5,7,5,3,4,4,8,8,0,0,9,9,4,5,2,8,3,4,6,6,8,0,9,9,6,1,4,6,3,6,1,4,4,
%U A216102 8,5,5,6,1,9,1,0,5,9,4,8,7,1,2,2,9,5,4,7,4,7,2,6,8,8,1,4
%N A216102 10's-complement of A216103.
%F A216102 a(n) = 10 - [{3^(5*10^(n+1)) mod 10^(2n+3) - 1}/(10^(2n+2)) mod 10].
%Y A216102 Cf. A216103, A007185, A016090, A091663, A018248, A091664, A018247.
%K A216102 nonn,base
%O A216102 1,1
%A A216102 _V. Raman_, Sep 01 2012
%E A216102 Edited by _N. J. A. Sloane_, Sep 02 2012