a(n) = prime(n^2+1).

Terms

a(0) =2a(1) =3a(2) =11a(3) =29a(4) =59a(5) =101a(6) =157a(7) =229a(8) =313a(9) =421a(10) =547a(11) =673a(12) =829a(13) =1013a(14) =1201a(15) =1429a(16) =1621a(17) =1889a(18) =2153a(19) =2441a(20) =2749a(21) =3089a(22) =3463a(23) =3821a(24) =4217a(25) =4639a(26) =5059a(27) =5521a(28) =6011a(29) =6491