OFFSET
1,1
COMMENTS
Results of my search up to 2^32.
LINKS
Giovanni Resta, Table of n, a(n) for n = 1..65 (terms < 3.5*10^12)
EXAMPLE
Example: a(8) = 1237 because there are the following eight embedded primes: 1237, 2, 23, 3, 37, 7 and 73, 7321.
CROSSREFS
KEYWORD
nonn,base,hard
AUTHOR
Carlos Rivera, Dec 19 2013
EXTENSIONS
Missing a(19) from Giovanni Resta, Jan 25 2014
STATUS
approved