Primes of the form 9*n^2 + 1.

Terms

a(0) =37a(1) =577a(2) =1297a(3) =2917a(4) =4357a(5) =7057a(6) =8101a(7) =14401a(8) =15877a(9) =22501a(10) =24337a(11) =32401a(12) =41617a(13) =44101a(14) =57601a(15) =69697a(16) =72901a(17) =90001a(18) =93637a(19) =147457a(20) =156817a(21) =176401a(22) =197137a(23) =224677a(24) =324901a(25) =331777a(26) =352837a(27) =404497a(28) =427717a(29) =476101