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Search: id:A023263
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A023263 Numbers n such that n remains prime through 2 iterations of function f(x) = 8x + 7. +0
1
2, 5, 107, 137, 179, 197, 227, 359, 419, 617, 659, 839, 977, 1097, 1217, 1409, 1487, 1559, 1637, 2087, 2339, 2447, 2549, 2609, 2687, 2909, 2957, 3167, 3299, 3467, 3719, 4139, 4409, 4787, 4919, 4937, 5147, 5189, 5279, 5639, 6047, 6269, 7229, 7547, 7949 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A132482 A136106 A122696 this_sequence A070855 A041237 A015172

Adjacent sequences: A023260 A023261 A023262 this_sequence A023264 A023265 A023266

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


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