OFFSET
1,1
COMMENTS
For numbers k for which (10+k!)/10 is prime see A139071.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..16
FORMULA
MATHEMATICA
a = {}; Do[If[PrimeQ[(n! + 10)/10], AppendTo[a, [(n! + 10)/10]], {n, 1, 50}]; a
Select[(Range[50]!+10)/10, PrimeQ] (* Harvey P. Dale, Sep 18 2013 *)
PROG
(PARI) for(k=5, 1e3, if(ispseudoprime(t=k!/10+1), print1(t", "))) \\ Charles R Greathouse IV, Jul 15 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Apr 07 2008
STATUS
approved