OFFSET
1,1
LINKS
Peter J. C. Moses, Table of n, a(n) for n = 1..2000
FORMULA
A226770(a^4(n) - 1) = 3.
MATHEMATICA
Select[Prime[Range[10000]], And@@PrimeQ[#1+{#2, #2^2, #2^3}]&[#^4-1, #]&] (* Peter J. C. Moses, Jul 05 2013 *)
Select[Prime[Range[60000]], AllTrue[#^4-1+#^Range[3], PrimeQ]&] (* Harvey P. Dale, Mar 26 2023 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, Jul 05 2013
EXTENSIONS
More terms from Peter J. C. Moses
STATUS
approved