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%I #7 Feb 05 2020 04:04:17
%S 0,1,2,3,7,8,9,12,13,18,24,38,48,60,113,196,210,391,681,739,778,1653,
%T 1778,1796,1820,2505,4595
%N Numbers k such that 6*k! + 1 is prime.
%C a(28) > 5800. - _Jinyuan Wang_, Feb 05 2020
%e k = 3 is here because 6*3! + 1 = 37 is prime.
%o (PARI) is(k) = ispseudoprime(6*k!+1); \\ _Jinyuan Wang_, Feb 05 2020
%Y Cf. A002981, A051915, A076679, A076680, A076681, A076683, A178488, A180626, A126896.
%K nonn,more
%O 1,3
%A Phillip L. Poplin (plpoplin(AT)bellsouth.net), Oct 25 2002
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