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%I #27 Oct 13 2019 05:40:19
%S 2310,2730,3570,3990,4290,4830,5610,6006,6090,6270,6510,6630,7410,
%T 7590,7770,7854,8610,8778,8970,9030,9282,9570,9690,9870,10010,10230,
%U 10374,10626,11130,11310,11730,12090,12210,12390,12558,12810,13090,13110
%N Products of 5 distinct primes.
%C Subsequence of A051270. 4620 = 2^2*3*5*7*11 is in A051270 but not in here, for example. - _R. J. Mathar_, Nov 10 2014
%H T. D. Noe, <a href="/A046387/b046387.txt">Table of n, a(n) for n = 1..10000</a>
%e a(1) = 2310 = 2 * 3 * 5 * 7 * 11 = A002110(5) = 5#.
%e a(2) = 2730 = 2 * 3 * 5 * 7 * 13.
%e a(3) = 3570 = 2 * 3 * 5 * 7 * 17.
%e a(10) = 6006 = 2 * 3 * 7 * 11 * 13.
%p A046387 := proc(n)
%p option remember;
%p local a;
%p if n = 1 then
%p 2*3*5*7*11 ;
%p else
%p for a from procname(n-1)+1 do
%p if A001221(a)= 5 and issqrfree(a) then
%p return a;
%p end if;
%p end do:
%p end if;
%p end proc: # _R. J. Mathar_, Oct 13 2019
%t f5Q[n_]:=Last/@FactorInteger[n]=={1, 1, 1, 1, 1}; lst={};Do[If[f5Q[n], AppendTo[lst, n]], {n, 8!}];lst (* _Vladimir Joseph Stephan Orlovsky_, Aug 26 2008 *)
%o (PARI) is(n)=factor(n)[,2]==[1,1,1,1,1]~ \\ _Charles R Greathouse IV_, Sep 17 2015
%o (PARI) is(n)= omega(n)==5 && bigomega(n)==5 \\ _Hugo Pfoertner_, Dec 18 2018
%Y Cf. A067885 (product of 6 distinct primes).
%Y Cf. A000040, A000961, A001221, A005117, A000977, A002110, A006881, A007304, A007774, A033992, A033993, A046386.
%Y Cf. A014614, A046403, A051270.
%K easy,nonn
%O 1,1
%A _Patrick De Geest_, Jun 15 1998
%E Entry revised by _N. J. A. Sloane_, Apr 10 2006
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