1,1

The primality of a(4)! was established by Andrey Kulsha (Andrey_601(AT)tut.by) and Peter Liaskovsky (ALTAIR(AT)tut.by).

Sequence in context: A122617 A044181 A044562 this_sequence A141958 A141990 A033227

Adjacent sequences: A060320 A060321 A060322 this_sequence A060324 A060325 A060326

base,hard,nonn

G. L. Honaker, Jr. (honak3r(AT)gmail.com), Mar 29 2001