a(n) is the n-th prime of the form n*x^2+1.

Terms

a(0) =2a(1) =19a(2) =193a(3) =101a(4) =35281a(5) =727a(6) =2269a(7) =18433a(8) =15877a(9) =7841a(10) =247501a(11) =10093a(12) =35153a(13) =727777a(14) =47041a(15) =33857a(16) =2913733a(17) =19603a(18) =1076237a(19) =486721a(20) =806737a(21) =55001a(22) =1907713a(23) =345601a(24) =193601a(25) =7581601a(26) =1037233a(27) =84701a(28) =42599377a(29) =337081