%I A117326
%S A117326 13,17,18,20,21,27,28,30,32,41,42,43,46,47,49,53,55,56,58,59,63,69,72,
%T A117326 75,81
%N A117326 Indices of semiprimes in A117322 prime(n) modulo semiprime(n).
%e A117326 a(1) = 13 because A117322(13) = prime(13) modulo semiprime(13) = 41 mod 
               35 = 6 = 2 * 3 is semiprime.
%e A117326 a(2) = 17 because A117322(17) = 59 mod 49 = 10 = 2 * 5 is semiprime.
%e A117326 a(3) = 18 because A117322(18) = 61 mod 51 = 10 = 2 * 5 is semiprime.
%e A117326 a(4) = 20 because A117322(20) = 71 mod 57 = 14 = 2 * 7 is semiprime.
%Y A117326 Sequence in context: A084307 A066918 A164062 this_sequence A052055 A075761 
               A046064
%Y A117326 Adjacent sequences: A117323 A117324 A117325 this_sequence A117327 A117328 
               A117329
%K A117326 easy,nonn
%O A117326 1,1
%A A117326 Jonathan Vos Post (jvospost3(AT)gmail.com), Mar 08 2006