The search for multifactorial primes started by Ray Ballinger is now continued by a team of volunteers on the website of Ken Davis (see link).
Table of n, a(n) for n=1..27.
Ken Davis, Status of Search for Multifactorial Primes.
Ken Davis, Results for n!4+1.
Cf. A007662 (quadruple factorials), A085147.
Sequence in context: A052930 A098853 A023149 * A066894 A233919 A111115
Adjacent sequences: A085143 A085144 A085145 * A085147 A085148 A085149
Hugo Pfoertner, Jun 25 2003
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 03 2008