OFFSET
1,1
COMMENTS
Primes of the form A004664(k) + 1.
For k! + k^2 + 1 to be prime, k > 1, it is necessary but not sufficient for k to be even.
No more terms for k < 1150. [Vincenzo Librandi, Dec 22 2010]
MATHEMATICA
lst={}; Do[s=n!+n^2; If[PrimeQ[p=s+1], AppendTo[lst, p]], {n, 0, 5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Sep 27 2008 *)
PROG
(Magma) [ a: n in [0..1150] | IsPrime(a) where a is Factorial(n)+n^2+1 ]; // Vincenzo Librandi, Dec 22 2010
CROSSREFS
KEYWORD
nonn
AUTHOR
Jonathan Vos Post, Jul 28 2006
STATUS
approved