Numbers n such that n^2 + 1 has two distinct prime divisors less than n.

Terms

a(0) =7a(1) =18a(2) =38a(3) =41a(4) =68a(5) =70a(6) =182a(7) =239a(8) =500a(9) =682a(10) =776a(11) =800a(12) =1068a(13) =1710a(14) =1744a(15) =4030a(16) =4060a(17) =5604a(18) =5744a(19) =8119a(20) =12156a(21) =15006a(22) =16610a(23) =17684a(24) =21490a(25) =25294a(26) =26884a(27) =27590a(28) =32060a(29) =32150