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 A194347 #8 Mar 30 2012 19:00:09
%S A194347 5,6,0,5,9,6,4,8,5,3,1,6,4,9,8,2,1,1,1,7,6,1,0,8,5,7,0,3,7,8,4,7,0,7,
%T A194347 7,2,3,0,1,0,9,9,8,3,1,5,2,3,1,2,2,8,4,0,7,4,4,4,4,2,4,4,7,2,0,2,3,1,
%U A194347 9,2,2,7,5,7,2,2,9,1,6,8,6,3,5,7,4,0,0,5,0,0,2,8,2,1,7,4,8,7,5,8
%N A194347 Decimal expansion of h_e(1/17), where h_e(x) is the even infinite power tower function.
%C A194347 See the Comments, References and Links in A194346.
%e A194347 0.560596485316498211176108570378470772301099831523122840744442447202319227572291...
%t A194347 a = N[(1/17)^(1/17), 100]; Do[a = (1/17)^(1/17)^a, {3000}]; RealDigits[a, 10, 100] // First
%Y A194347 Cf. A073229, A073230, A073243, A194346.
%K A194347 nonn,cons
%O A194347 0,1
%A A194347 _Jonathan Sondow_, Aug 27 2011