OFFSET
1,1
REFERENCES
Chris K. Caldwell and G. L. Honaker, Jr., Prime Curios!, CreateSpace, 2009, Page 82.
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
EXAMPLE
a(1)=263 because the semiprime 6 inserted between its ordered prime factors (2 and 3) is prime.
PROG
(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
CROSSREFS
KEYWORD
nonn,base
AUTHOR
G. L. Honaker, Jr., Oct 01 2013
EXTENSIONS
a(4)-a(8), a(10)-a(35) from Charles R Greathouse IV, Oct 01 2013
STATUS
approved