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A137459
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Prime numbers n such that n^2 +- (n-1) are primes.
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0
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2, 3, 13, 163, 193, 349, 541, 769, 1093, 1231, 1423, 1549, 1621, 1693, 1801, 2011, 3049, 3511, 4003, 4111, 4159, 5839, 6091, 6421, 6703, 6883, 7573, 7753, 8929, 9043, 9601, 9769, 9781, 12781, 13633, 14821, 15091, 15439, 16141, 16759, 17863, 18493
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 2^2 +- 1 -> (3,4) Primes,
3^2 +- 2 -> (7,11) Primes,
13^2 +- 12 -> (157,181) Prime
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MATHEMATICA
| Select[Prime[Range[800]], PrimeQ[ #^2-(#-1)]&&PrimeQ[ #^2+(#-1)]&]
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CROSSREFS
| Sequence in context: A125283 A153888 A068083 * A072162 A113785 A118323
Adjacent sequences: A137456 A137457 A137458 * A137460 A137461 A137462
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KEYWORD
| nonn
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AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 21 2008
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EXTENSIONS
| More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 26 2008
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