1,1

n^4+1 can be prime for at most eight consecutive even numbers n, otherwise at least one member would be divisible by 17.

Table of n, a(n) for n=1..6.

a(1)=10332305196 because 103323051964^4+1 is prime and (10332305196+m)^4+1 is prime for all even m up to 14.

Cf. A000068.

Sequence in context: A098143 A276590 A259152 * A017541 A112453 A321707

Adjacent sequences: A135044 A135045 A135046 * A135048 A135049 A135050

nonn

Martin Raab, Feb 11 2008

approved