Smallest prime divisor of n^4-n^2+1.

Terms

a(0) =13a(1) =73a(2) =241a(3) =601a(4) =13a(5) =13a(6) =37a(7) =6481a(8) =9901a(9) =13a(10) =20593a(11) =28393a(12) =37a(13) =13a(14) =97a(15) =83233a(16) =229a(17) =13a(18) =13a(19) =61a(20) =157a(21) =37a(22) =13a(23) =390001a(24) =181a(25) =530713a(26) =13a(27) =37a(28) =809101a(29) =922561