%I A087000
%S A087000 3,1,3,8,9,11,14,23,29,30,4,22,48,2,17,54,56,21,65,4,23,74,39,83,89,90,
%T A087000 96,49,15,111,114,116,15,25,128,131,134,14,73,156,55,168,58,16,183,93,
%U A087000 189,191,194,100,102,209,70,216,16,76,230,77,243,245,249,251
%N A087000 Half length of periodic part of decimal expansion of 1/p for those primes 
               having a periodic part of even length.
%C A087000 a(n) = A002371(A049084(A086998(n)))/2 = A055642(A086999(n))/2 = A055642(A087001(n)) 
               = A055642(A087002(n)).
%H A087000 <a href="Sindx_1.html#1overn">Index entries for sequences related to 
               decimal expansion of 1/n.</a>
%Y A087000 A028416, A002371. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), 
               Oct 05 2008]
%Y A087000 Sequence in context: A011088 A156368 A068958 this_sequence A010282 A119265 
               A143453
%Y A087000 Adjacent sequences: A086997 A086998 A086999 this_sequence A087001 A087002 
               A087003
%K A087000 nonn
%O A087000 1,1
%A A087000 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 29 2003