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%I #10 Apr 21 2018 21:00:32
%S 4,6,12,36,158,871,5802,44996,396465,3905769,42492571,505638346,
%T 6530063762,90937897520,1358169957289,21652573590950,366977865386054,
%U 6588521300048437,124902980656633121,2493219952752601419,52268714816806571926
%N The (n!)-th composite number.
%F a(n) = A002808(A000142(n)) for n >= 1. - _Altug Alkan_, Apr 21 2018
%t c[n_] := FixedPoint[ n + PrimePi[ # ]+1&, n] Table[ c[n! ], {n, 1, 16}]
%Y Cf. A000142, A002808.
%K nonn
%O 1,1
%A _Labos Elemer_, Jul 19 2002
%E Extended by _Robert G. Wilson v_, Jul 20 2002
%E a(17)-a(21) from _Chai Wah Wu_, Apr 21 2018
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