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A137461
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Positive numbers n such that n^3 +- (n-1) are primes.
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0
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4, 7, 10, 15, 21, 25, 39, 52, 87, 120, 129, 139, 189, 202, 259, 286, 316, 376, 391, 466, 472, 486, 510, 532, 574, 631, 642, 684, 685, 739, 750, 769, 882, 972, 987, 991, 1029, 1074, 1092, 1201, 1212, 1231, 1320, 1326, 1456, 1506, 1522, 1524, 1539, 1575, 1632
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 7^3 +- 6 -> (337,349) Primes,
139^3 +- 138 -> (2685481,2685757) Primes
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MATHEMATICA
| Select[Range[999], PrimeQ[ #^3-(#-1)]&&PrimeQ[ #^3+(#-1)]&]
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PROG
| (MAGMA) [n: n in [0..500] | IsPrime(n^3-(n-1))and IsPrime(n^3 +(n-1))] [From Vincenzo Librandi, Nov 24 2010]
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CROSSREFS
| Sequence in context: A126891 A095875 A071408 * A137379 A096676 A092863
Adjacent sequences: A137458 A137459 A137460 * A137462 A137463 A137464
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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 Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Mar 26 2010
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