a(n)=the prime q<prime(n) for which (prime(n) mod q) is maximal.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =7a(5) =11a(6) =11a(7) =13a(8) =17a(9) =17a(10) =19a(11) =23a(12) =23a(13) =29a(14) =29a(15) =31a(16) =31a(17) =37a(18) =37a(19) =37a(20) =41a(21) =43a(22) =47a(23) =53a(24) =53a(25) =53a(26) =59a(27) =59a(28) =59a(29) =67