A100496 Numbers n such that (2^n+1)^4-2 is prime.
1, 7, 25, 31, 34, 271, 514, 2896, 8827, 16816, 37933
Offset: 1
Examples
a(1) = 1 because (2^1+1)^4 - 2 = 79 is prime and is the first such prime.
Crossrefs
Programs
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Mathematica
Select[Range[5000], PrimeQ[(2^# + 1)^4 - 2] &]
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PARI
is(n)=ispseudoprime((2^n+1)^4-2) \\ Charles R Greathouse IV, Jun 13 2017
Extensions
Edited, corrected and extended by Ray Chandler and Hugo Pfoertner, Nov 26 2004
a(10)-a(11) from Tyler Busby, Feb 12 2023
Comments