A084444 Primes that can be written as 1+p+p^k, p prime and k>1.

7, 11, 13, 19, 31, 67, 131, 307, 631, 733, 1723, 3541, 4099, 4931, 5113, 8011, 10303, 14653, 17293, 19687, 24419, 28057, 30103, 32771, 59053, 65539, 68963, 86143, 147073, 148931, 262147, 357983, 459007, 492103, 552793, 571871, 579883, 598303, 684757, 704761

Offset

1,1

Comments

A084440(a(n))>0; subset of A084441.

Links

Jason Yuen, Table of n, a(n) for n = 1..10000

Example

729 = 1+3+3^6.

Crossrefs

Cf. A084440, A084441.

Sequence in context: A059637 A059308 A075521 * A081091 A027901 A129213

Adjacent sequences: A084441 A084442 A084443 * A084445 A084446 A084447

Keyword

nonn

Author

Reinhard Zumkeller, May 26 2003

Extensions

More terms from David Wasserman, Dec 29 2004

Status

approved