a(n) is the largest prime < 5*a(n-1) for n > 1, with a(1) = 2.
A126033
a(n) is the largest prime < 5*a(n-1) for n > 1, with a(1) = 2.
Terms
- a(0) =2a(1) =7a(2) =31a(3) =151a(4) =751a(5) =3739a(6) =18691a(7) =93427a(8) =467123a(9) =2335607a(10) =11678021a(11) =58390103a(12) =291950479a(13) =1459752391a(14) =7298761949a(15) =36493809683a(16) =182469048409a(17) =912345242041
External references
- oeis: A126033