%I #17 Oct 03 2013 18:56:30
%S 263,3217,22613,23417,23819,24623,27437,28643,33311,35117,36923,38729,
%T 55511,77711,211859,213467,214673,311137,312943,321371,324983,511523,
%U 514529,535571,716123,762389,1118717,1120919,1125323,1145141,1151747,1180373,1322117,1337729,1732319
%N Primes formed by inserting a semiprime between the semiprime's ordered factors.
%D Chris K. Caldwell and G. L. Honaker, Jr., Prime Curios!, CreateSpace, 2009, Page 82.
%H Charles R Greathouse IV, <a href="/A229480/b229480.txt">Table of n, a(n) for n = 1..10000</a>
%e a(1)=263 because the semiprime 6 inserted between its ordered prime factors (2 and 3) is prime.
%o (PARI) list(lim)=my(v=List(),t); forprime(q=2,sqrtint(lim\10), forprime(p=2,min(sqrtint(lim\q),q), t=eval(Str(p,p*q,q)); if(t>lim,next(2)); if(isprime(t), listput(v,t)))); vecsort(Vec(v)) \\ _Charles R Greathouse IV_, Oct 01 2013
%Y Cf. A001358.
%K nonn,base
%O 1,1
%A _G. L. Honaker, Jr._, Oct 01 2013
%E a(4)-a(8), a(10)-a(35) from _Charles R Greathouse IV_, Oct 01 2013