a(n) = prime(k) with k = n^2 + prime(n)^2.

Terms

a(0) =11a(1) =41a(2) =139a(3) =313a(4) =839a(5) =1259a(6) =2273a(7) =2953a(8) =4493a(9) =7417a(10) =8689a(11) =12659a(12) =15881a(13) =17837a(14) =21683a(15) =28097a(16) =35401a(17) =38321a(18) =46993a(19) =53353a(20) =56909a(21) =67499a(22) =75277a(23) =87539a(24) =105167a(25) =115061a(26) =120431a(27) =130817a(28) =136559a(29) =147881