%I
%S 0,1,2,4,6,18,38,56,94,118,148,286,1358,1480,1514,2680,2846,4078,4288,
%T 5612,5680,6440,6586,14614,30972,31690,54406
%N Numbers n such that n!!!!+1 is prime.
%C 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).
%H Ken Davis, <a href="http://mfprimes.freedc.org">Status of Search for Multifactorial Primes.</a>
%H Ken Davis, <a href="http://mfprimes.freedc.org/mfdata/f04p.html">Results for n!4+1.</a>
%Y Cf. A007662 (quadruple factorials), A085147.
%K hard,nonn
%O 1,3
%A _Hugo Pfoertner_, Jun 25 2003
%E More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 03 2008
