

A134597


a(n) gives the maximal value of A075053(m) for any ndigit number m.


3




OFFSET

1,2


COMMENTS

In A075053(m), the primes obtained as permutations of digits of m are counted several times if they can be obtained in several different ways. See sequence A076730 which uses A039993 instead, i.e., counting only different primes.  M. F. Hasler, Mar 11 2014


LINKS

Table of n, a(n) for n=1..5.
M. Keith, Integers containing many embedded primes


FORMULA

a(n) <= A007526(n), with equality iff n <= 2. [Keith]
a(n) = max { A075053(m); 10^(n1) <= m < 10^n } >= A076730(n) = max { A039993(m); 10^(n1) <= m < 10^n }.  M. F. Hasler, Mar 11 2014


CROSSREFS

Cf. A039993, A134596.
Sequence in context: A027216 A124541 A323789 * A007526 A233536 A318121
Adjacent sequences: A134594 A134595 A134596 * A134598 A134599 A134600


KEYWORD

nonn,base,more


AUTHOR

N. J. A. Sloane, Jan 25 2008


EXTENSIONS

Link fixed by Charles R Greathouse IV Aug 13 2009
Definition corrected by M. F. Hasler, Mar 11 2014


STATUS

approved



