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%I #12 Sep 08 2022 08:46:17
%S 0,0,1,3,6,15,46,151,570,2376,10961,54941,297220,1720725,10602541,
%T 69176095,475881437,3439093081,26026621617,205694058211,1693554793730,
%U 14494778231067,128711956613875,1183763037547762,11258075170582653,110558809039675629,1119649516271861536
%N Number of primes <= n-th Bell number.
%F a(n) = A000720(A000110(n)). - _Michel Marcus_, Nov 10 2016
%t Table[PrimePi[BellB[n]], {n, 0, 20}]
%o (Magma) [#PrimesUpTo(Bell(n)): n in [0..14]];
%Y Cf. A000110, A054782, A277062.
%K nonn
%O 0,4
%A _Vincenzo Librandi_, Nov 10 2016
%E a(21)-a(26) from _Charles R Greathouse IV_, Nov 10 2016
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