A variant of the Euclid-Mullin sequence A000945: a(1) = 2, a(n+1) is smallest prime factor congruent to 3 (mod 4) of Product_{k=1..n} a(k) + 1.
A218467
A variant of the Euclid-Mullin sequence A000945: a(1) = 2, a(n+1) is smallest prime factor congruent to 3 (mod 4) of Product_{k=1..n} a(k) + 1.
Terms
- a(0) =2a(1) =3a(2) =7a(3) =43a(4) =139a(5) =50207a(6) =23a(7) =10651a(8) =563a(9) =11a(10) =19a(12) =787a(13) =2803
External references
- oeis: A218467