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%I #18 Nov 05 2023 09:02:05
%S 4,6,9,14,15,21,22,25,26,33,34,35,38,39,46,49,51,55,57,58,62,65,69,74,
%T 77,82,85,86,87,91,93,94,95,111,115,118,119,121,122,123,129,133,134,
%U 141,142,143,145,146,155,158,159,161,166,169,177,178,183,185,187
%N Zero-free semiprimes.
%C Intersection of A001358 and A052382. - _Michel Marcus_, Oct 09 2013
%e 74 is in the sequence because it is a semiprime (2*37) and does not have 0 in digits. - _Michel Marcus_, Oct 14 2013
%t SemiPrimeQ[n_Integer] := If[Abs[n] < 2, False, (2 == Plus @@ Transpose[FactorInteger[Abs[n]]][[2]])]; Select[Range[2, 200], SemiPrimeQ[#] && Min[IntegerDigits[#]] > 0 &] (* _T. D. Noe_, Oct 11 2013 *)
%o (PARI) lista(nn) = {vec = vector(nn, i, i); pp = select(i->(((bigomega(i) == 2) && vecmin(digits(i)))), vec); print(pp);} \\ _Michel Marcus_, Oct 09 2013
%K base,nonn
%O 1,1
%A _Zak Seidov_, May 30 2006
%E Data corrected by _Michel Marcus_, Oct 14 2013
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