%I A049984
%S A049984 2,5,19,97,601,35281,5748019201,2311256907767808001,594596384994354462720001,
%T A049984 5382999938946608755288342267304597177897268019200000000001,
%U A049984 136332557214406957166109544809874331662074014454506289616400595025920000000000001
%N A049984 Primes of form n!-(n-1)!+1.
%t A049984 f[n_]:=n!+n; lst={};Do[If[PrimeQ[f[n+1]-f[n]],AppendTo[lst,f[n+1]-f[n]]],
               {n,0,5!}];lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 
               27 2009]
%Y A049984 For more terms see A049432.
%Y A049984 Sequence in context: A020019 A020109 A020015 this_sequence A052866 A007003 
               A020117
%Y A049984 Adjacent sequences: A049981 A049982 A049983 this_sequence A049985 A049986 
               A049987
%K A049984 nonn
%O A049984 1,1
%A A049984 N. J. A. Sloane (njas(AT)research.att.com).