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A088796 Primes p such that p^3 + p^2 - 1 is also prime. 1
2, 5, 11, 19, 29, 37, 47, 71, 89, 97, 107, 127, 139, 179, 281, 317, 331, 337, 379, 397, 461, 499, 509, 571, 617, 659, 677, 691, 709, 839, 877, 887, 907, 1021, 1049, 1051, 1087, 1097, 1229, 1279, 1297, 1307, 1381, 1429, 1447, 1481, 1489, 1499, 1511, 1579 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

EXAMPLE

a(5) = 29 because (29^2 + 29^3 - 1) = (841 + 24389 - 1) = 25229, which is prime.

MAPLE

filter:= n -> isprime(n) and isprime(n^2 + n^3 - 1):

select(filter, [2, seq(i, i=3..10000, 2)]); # Robert Israel, Jan 29 2017

MATHEMATICA

Select[Prime[Range[300]], PrimeQ[#^3+#^2-1]&] (* Harvey P. Dale, Feb 07 2017 *)

PROG

(PARI) isok(n) = isprime(n) && isprime(n^2+n^3-1) \\ Michel Marcus, Jul 29 2013

CROSSREFS

Sequence in context: A031870 A040147 A152471 * A190309 A161550 A245207

Adjacent sequences:  A088793 A088794 A088795 * A088797 A088798 A088799

KEYWORD

nonn

AUTHOR

Chuck Seggelin (barkeep(AT)plastereddragon.com), Oct 16 2003

STATUS

approved

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Last modified August 22 07:40 EDT 2019. Contains 326172 sequences. (Running on oeis4.)