Centered 21-gonal primes.

Terms

a(0) =127a(1) =211a(2) =757a(3) =2521a(4) =2857a(5) =6301a(6) =8527a(7) =16381a(8) =19867a(9) =23689a(10) =24697a(11) =27847a(12) =32341a(13) =37171a(14) =38431a(15) =42337a(16) =66361a(17) =68041a(18) =82237a(19) =89839a(20) =97777a(21) =103951a(22) =114661a(23) =140071a(24) =152461a(25) =162751a(26) =170689a(27) =192781a(28) =204331a(29) =216217