A067662 Numbers n such that n^2+1 and n^4+1 are primes.

1, 2, 4, 6, 16, 20, 24, 54, 56, 74, 90, 160, 180, 204, 210, 340, 430, 436, 466, 556, 584, 690, 760, 930, 936, 966, 986, 1144, 1150, 1246, 1406, 1434, 1586, 1644, 1700, 1824, 1850, 1870, 1910, 2074, 2126, 2224, 2260, 2266, 2336, 2360, 2536, 2604, 2646, 2676