A049984 Primes of the form n! - (n-1)! + 1.

2, 5, 19, 97, 601, 35281, 5748019201, 2311256907767808001, 594596384994354462720001, 5382999938946608755288342267304597177897268019200000000001, 136332557214406957166109544809874331662074014454506289616400595025920000000000001

Offset

1,1

Comments

Primes in A188914.

Links

Table of n, a(n) for n=1..11.

Mathematica

f[n_]:=n!+n; lst={}; Do[If[PrimeQ[f[n+1]-f[n]], AppendTo[lst, f[n+1]-f[n]]], {n, 0, 5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 27 2009 *)

Crossrefs

Cf. A188914. For more terms, see A049432.

Sequence in context: A363210 A291061 A188914 * A052866 A007003 A020117

Adjacent sequences: A049981 A049982 A049983 * A049985 A049986 A049987

Keyword

nonn

Author

N. J. A. Sloane

Status

approved