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A201261 Primes of the form n^3 + 7. 1
7, 71, 223, 5839, 13831, 46663, 64007, 262151, 287503, 438983, 830591, 884743, 1481551, 1643039, 2985991, 3375007, 5268031, 5639759, 5832007, 8998919, 11852359, 14886943, 15625007, 18399751, 19683007, 28652623, 29791007, 76225031, 77308783 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Infinite under the Bateman-Horn-Stemmler conjecture. - Charles R Greathouse IV, Jul 13 2012

Old name was "Primes of the form 8*n^3 + 7".

LINKS

Vincenzo Librandi and Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Table[n^3 + 7, {n, 0, 298, 2}], PrimeQ]

PROG

(MAGMA) [a: n in [0..300] | IsPrime(a) where a is 8*n^3+7];

(PARI) select(isprime, vector(1000, n, 8*(n-1)^3+7))  \\ Charles R Greathouse IV, Jul 13 2012

CROSSREFS

Sequence in context: A142037 A087390 A142928 * A069634 A069619 A137443

Adjacent sequences:  A201258 A201259 A201260 * A201262 A201263 A201264

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 29 2011

EXTENSIONS

Name simplified by Alex Ratushnyak, Apr 06 2013

STATUS

approved

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Last modified September 26 08:09 EDT 2020. Contains 337346 sequences. (Running on oeis4.)