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A071351 2+n^4 and -2+n^4 are both prime numbers. +0
1
3, 21, 87, 99, 129, 141, 279, 627, 657, 777, 783, 795, 1653, 1725, 1833, 1959, 2001, 2043, 3039, 3399, 3609, 3861, 3975, 4257, 4371, 4491, 5403, 5541, 5709, 5985, 7371, 7539, 7869, 7917, 8397, 8445, 8547, 8793, 9051, 9057, 9915, 9933, 11067, 12153 (list; graph; listen)
OFFSET

1,1

EXAMPLE

n=3: n^4=81 and {79,83} are primes.

CROSSREFS

Adjacent sequences: A071348 A071349 A071350 this_sequence A071352 A071353 A071354

Sequence in context: A102832 A112851 A034490 this_sequence A083231 A129755 A059826

KEYWORD

easy,nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), May 21 2002

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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