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

Terms

a(0) =5a(1) =10a(2) =26a(3) =50a(4) =122a(5) =170a(6) =290a(7) =362a(8) =530a(9) =842a(10) =962a(11) =1370a(12) =1682a(13) =1850a(14) =2210a(15) =2810a(16) =3482a(17) =3722a(18) =4490a(19) =5042a(20) =5330a(21) =6242a(22) =6890a(23) =7922a(24) =9410a(25) =10202a(26) =10610a(27) =11450a(28) =11882a(29) =12770