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A100496 Numbers n such that (2^n+1)^4-2 is prime. 2
1, 7, 25, 31, 34, 271, 514, 2896, 8827 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Some of the results were computed using the PrimeFormGW (PFGW) primality-testing program. - Hugo Pfoertner, Nov 14 2019

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

a(1) = 1 because (2^1+1)^4 - 2 = 79 is prime and is the first such prime.

MATHEMATICA

Select[Range[5000], PrimeQ[(2^# + 1)^4 - 2] &]

PROG

(PARI) is(n)=ispseudoprime((2^n+1)^4-2) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Cf. A091513, A091514, A093069, A099359.

Cf. A100497, n such that (2^n+1)^4-2 is semiprime.

Sequence in context: A327107 A075926 A065660 * A110081 A140716 A141393

Adjacent sequences:  A100493 A100494 A100495 * A100497 A100498 A100499

KEYWORD

more,nonn

AUTHOR

Jonathan Vos Post, Nov 23 2004

EXTENSIONS

Edited, corrected and extended by Ray Chandler and Hugo Pfoertner, Nov 26 2004

STATUS

approved

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Last modified August 5 22:11 EDT 2020. Contains 336214 sequences. (Running on oeis4.)