Smallest prime of the form n(n-1)(n-2)...(n-k)+1, or 0 if no such prime exists.

Terms

a(0) =2a(1) =3a(2) =7a(3) =5a(4) =61a(5) =7a(6) =43a(7) =337a(8) =73a(9) =11a(10) =991a(11) =13a(12) =157a(13) =121080961a(14) =211a(15) =17a(17) =19a(18) =0a(19) =6841a(20) =421a(21) =23a(22) =10627a(23) =96909121a(24) =601a(25) =15601a(26) =17551a(27) =29a(28) =173059286401a(29) =31a(30) =530122321