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

Offset

1,2

Links

Giovanni Resta, Table of n, a(n) for n = 1..10000 (first 5000 terms from Seiichi Manyama)

Prog

(Magma) [n: n in [0..10000]| IsPrime(n^2+1) and IsPrime(n^4+1)] // Vincenzo Librandi, Aug 07 2010

Crossrefs

Intersection of A000068 and A005574.

Sequence in context: A069654 A330359 A000068 * A248334 A001774 A053285

Adjacent sequences: A067659 A067660 A067661 * A067663 A067664 A067665

Keyword

nonn

Author

Benoit Cloitre, Feb 23 2002

Status

approved