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A316360 Numbers k such that (2^k-2)^2-3 is prime. 0
4, 8, 12, 14, 18, 32, 62, 66, 96, 120, 122, 140, 180, 202, 228, 740, 800, 810, 1012, 1142, 1386, 1496, 1698, 4622, 5674, 54892 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..26.

MAPLE

select(k->isprime(4^k-2^(2+k)+1), [$ 1..3000]); # Muniru A Asiru, Jul 01 2018

MATHEMATICA

Select[Range[3000], PrimeQ[(2^# - 2)^2 - 3] &] (* Michael De Vlieger, Jun 30 2018 *)

PROG

(PARI) is(n)=ispseudoprime((2^n-2)^2-3)

(MAGMA) [n: n in [2..750] |IsPrime((2^n - 2)^2 - 3)]; // Vincenzo Librandi, Jul 01 2018

CROSSREFS

Sequence in context: A285374 A132457 A311080 * A311081 A311082 A311083

Adjacent sequences:  A316357 A316358 A316359 * A316361 A316362 A316363

KEYWORD

nonn,more

AUTHOR

Patrick C. Schneider, Jun 30 2018

EXTENSIONS

a(26) from Giovanni Resta, Jul 02 2018

STATUS

approved

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Last modified October 22 22:34 EDT 2019. Contains 328335 sequences. (Running on oeis4.)