OFFSET
1,1
COMMENTS
Primes of the form (10+k!)/10 see A139070.
a(24) > 25000. - Robert Price, Nov 08 2016
MATHEMATICA
a = {}; Do[If[PrimeQ[(n! + 10)/10], AppendTo[a, n]], {n, 1, 500}]; a
PROG
(PARI) for(k=5, 1e3, if(ispseudoprime(k!/10+1), print1(k", "))) \\ Charles R Greathouse IV, Jul 15 2011
CROSSREFS
Cf. A082672, A089085, A089130, A117141, A007749, A139056, A139057, A139058, A139059, A139060, A139061, A139061, A139062, A139063, A139064, A139065, A139066, A020458, A139068, A137390, A139070, A139071, A139072.
KEYWORD
nonn
AUTHOR
Artur Jasinski, Apr 07 2008
EXTENSIONS
More terms from Serge Batalov, Feb 18 2015
a(22)-a(23) from Robert Price, Nov 08 2016
STATUS
approved