OFFSET
1,2
LINKS
T. D. Noe, Table of n, a(n) for n = 1..201
FORMULA
a(n) = prime(A080155(n)).
MAPLE
with(numtheory): pout := [2]: nout := [1]: for n from 2 to 5000 do: p := ithprime(n): d := parse(cat(seq(pout[i], i=1..nops(pout)), p)): if (isprime(d)) then pout := [op(pout), p]: nout := [op(nout), n]: fi: od: nout;
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Mark Hudson (mrmarkhudson(AT)hotmail.com), Jan 31 2003
EXTENSIONS
Edited by Charles R Greathouse IV, Apr 30 2010
STATUS
approved