The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A067662 Numbers n such that n^2 + 1 and n^4 + 1 are primes. 2
 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 (list; graph; refs; listen; history; text; internal format)
 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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified April 20 05:31 EDT 2021. Contains 343121 sequences. (Running on oeis4.)