%I A087002
%S A087002 857,0,230,41176470,473684210,56521739130,65517241379310,
%T A087002 78723404255319148936170,83050847457627118644067796610,
%U A087002 836065573770491803278688524590,8630,8876404494382022471910
%N A087002 Right half of periodic part of decimal expansion of 1/p for those primes 
               having a periodic part of even length.
%C A087002 a(n) = A086999(n) mod 10^A087000(n); A055642(a(n))=A087000(n);
%C A087002 A087001(n) + a(n) = 10^A087000(n) - 1.
%D A087002 H. Rademacher and O. Toeplitz, Von Zahlen und Figuren (Springer 1930, 
               reprinted 1968), ch. 19, Die periodischen Dezimalbrueche.
%H A087002 <a href="Sindx_1.html#1overn">Index entries for sequences related to 
               decimal expansion of 1/n.</a>
%H A087002 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               MidysTheorem.html">Midy's Theorem</a>
%e A087002 p=19: A086999(5)=526315789473684210 -> [526315789][473684210] ->
%e A087002 A087001(5)=526315789, A087002(5)=473684210,
%e A087002 A087001(5)+A087002(5)=526315789+473684210=999999999.
%Y A087002 Sequence in context: A085323 A105275 A100969 this_sequence A046394 A163304 
               A108822
%Y A087002 Adjacent sequences: A086999 A087000 A087001 this_sequence A087003 A087004 
               A087005
%K A087002 nonn,base
%O A087002 1,1
%A A087002 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 29 2003