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 A181284 #16 Dec 15 2017 17:37:12
%S A181284 2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,
%T A181284 2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,2,7,0,8,9,6,9,6,9,6,9,6,
%U A181284 9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9,6,9
%N A181284 Decimal expansion of sqrt(9/121 * 100^m + (112 - 44*m)/121), where m=30.
%D A181284 Clifford A. Pickover, "Zebra Irrationals," The Mathematics of Oz: Mental Gymnastics From Beyond The Edge. Cambridge University Press, 2002. Page 74.
%H A181284 Seiichi Manyama, <a href="/A181284/b181284.txt">Table of n, a(n) for n = 30..50000</a>
%e A181284 272727272727272727272727272727.2727272727272727272727272727089696969...
%t A181284 First@ RealDigits@ With[{m = 30}, N[Sqrt[9/121*100^m + (112 - 44 m)/121], 120]] (* _Michael De Vlieger_, Mar 25 2016 *)
%o A181284 (PARI) sqrt(9e60-1208)/11 \\ _Charles R Greathouse IV_, Apr 26 2012
%K A181284 easy,nonn,cons
%O A181284 30,1
%A A181284 _Jason Earls_, Oct 12 2010