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 A098458 #4 Mar 30 2012 17:37:53
%S A098458 1,4,3,1,8,6,7,5,1,12,9,8,20,10,7,1,16,12,17,10,14,18,13,9,1,20,15,18,
%T A098458 32,12,25,13,14,16,11,1,24,18,16,15,32,14,29,20,20,34,19,13,1,28
%N A098458 Periods of the Farey Bisection Expansions (FBE) of Sqrt[n], for n=1,2,3,...
%C A098458 See A098457 for the definition of the Farey Bisection Expansion.
%H A098458 N. J. A. Sloane, <a href="/stern_brocot.html">Stern-Brocot or Farey Tree</a>
%e A098458 The FBE of Sqrt[7] is {1,1,0,1,0,1,1,1,1,0,1,0,1,1,1,1,0,1,0,1,1,..
%e A098458 with period 7. Thus a(7)=7.
%Y A098458 Cf. A010121, A097853, A098457.
%K A098458 nonn
%O A098458 1,2
%A A098458 _John W. Layman_, Sep 08 2004