A066101 Duplicate of A063784.

73, 757, 1772893, 48551233240513, 378890487846991, 3156404483062657, 17390284913300671, 280343912759041771, 319913861581383373, 487014306953858713, 7824668707707203971, 8443914727229480773, 32564717507686012813, 48095468363380957093, 54811417636756749151

Offset

1,1

Comments

Previous name: Primes of the form q = p^6 + p^3 + 1 = sigma_3(p^2), where p is prime.

Links

Harry J. Smith, Table of n, a(n) for n = 1..200

Example

73 = 64 + 8 + 1, 757 = 729 + 27 + 1, etc.

Prog

(PARI) { n=0; for (m=1, 10^9, p=prime(m); q=p^6 + p^3 + 1; if (isprime(q), write("b066101.txt", n++, " ", q); if (n==200, return)) ) } \\ Harry J. Smith, Nov 13 2009

Crossrefs

Cf. A066100, A001158, A000040, A063783.

Sequence in context: A177514 A137835 A063784 * A272768 A100412 A169830

Adjacent sequences: A066098 A066099 A066100 * A066102 A066103 A066104

Keyword

dead

Author

Labos Elemer, Dec 04 2001

Status

approved