a(1)=1, and recursively a(n+1) is the smallest prime p of the form p = 2*a(n) + 5^k for some k>0.
A113927
a(1)=1, and recursively a(n+1) is the smallest prime p of the form p = 2*a(n) + 5^k for some k>0.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =43a(4) =211a(5) =547a(6) =4219a(7) =8443a(8) =17011a(9) =34147a(10) =71419a(11) =142963a(12) =1220989051a(13) =3662681227
External references
- oeis: A113927