OFFSET
1,1
COMMENTS
All terms == 5 (mod 24). All terms except the first == 101 mod 120. - Robert Israel, Jul 01 2019
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
EXAMPLE
5 = 1^4 + 5; 1301 = 6^4 + 5.
MAPLE
# choose N large, then S is the desired set
f:=n->n^4 + 5:
S:={}:
for n from 0 to N do if(isprime(f(n))) then S:=S union {f(n)}: fi: od:
CROSSREFS
KEYWORD
nonn
AUTHOR
Patrick Devlin, Apr 25 2012
STATUS
approved