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%I #12 Nov 15 2019 16:03:43
%S 1,2,3,4,5,6,8,17,18,24,95,96,142,1022,1120,1580,6942,19255,19401
%N n! + n# + 1 is prime, where n# is the primorial function.
%C Some of the larger entries may only correspond to probable primes.
%H Mike Oakes, <a href="http://groups.yahoo.com/group/primenumbers/message/12028">Primo-factorials</a>.
%H Mike Oakes, <a href="/A081710/a081710.txt">Primo-factorials</a>, message 12028 in primenumbers Yahoo group, Apr 3, 2003. [Cached copy]
%H Joe McLean, <a href="http://web.archive.org/web/20091027034731/http://uk.geocities.com/nassarawa%40btinternet.com/probprim2.htm">Interesting Sources of Probable Primes</a>
%e a(2)=2 because 2!+2#+1=5 is prime
%Y Cf. A081711, A081712, A081713.
%K nonn,more,hard
%O 1,2
%A _Mike Oakes_, Apr 04 2003
%E More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 03 2008