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Search: id:A023265
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A023265 Numbers n such that n remains prime through 2 iterations of function f(x) = 9x + 2. +0
2
3, 11, 19, 31, 103, 109, 113, 131, 151, 173, 179, 239, 283, 313, 491, 521, 599, 619, 733, 739, 773, 929, 1019, 1103, 1361, 1439, 1481, 1621, 1709, 1741, 1831, 1993, 2083, 2153, 2293, 2411, 2549, 2551, 2593, 2689, 2741, 2819, 2843, 2969, 3001, 3623, 3931, 4001 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A038536 A031369 A014223 this_sequence A018557 A085616 A138723

Adjacent sequences: A023262 A023263 A023264 this_sequence A023266 A023267 A023268

KEYWORD

nonn

AUTHOR

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

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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