A182345 - OEIS

%I #16 Jul 02 2019 01:48:21

%S 5,1301,331781,18974741,37015061,136048901,429981701,1196883221,

%T 1731891461,4032758021,4430766101,12745506821,13680577301,43237380101,

%U 74247530261,92844527621,151613669381,196741925141

%N Primes of the form n^4 + 5.

%C All terms == 5 (mod 24).  All terms except the first == 101 mod 120. - _Robert Israel_, Jul 01 2019

%H Robert Israel, <a href="/A182345/b182345.txt">Table of n, a(n) for n = 1..10000</a>

%e 5 = 1^4 + 5; 1301 = 6^4 + 5.

%p # choose N large, then S is the desired set

%p f:=n->n^4 + 5:

%p S:={}:

%p for n from 0 to N do if(isprime(f(n))) then S:=S union {f(n)}: fi: od:

%Y Cf. A037896.

%K nonn

%O 1,1

%A _Patrick Devlin_, Apr 25 2012