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 A046387 Products of 5 distinct primes. 23
 2310, 2730, 3570, 3990, 4290, 4830, 5610, 6006, 6090, 6270, 6510, 6630, 7410, 7590, 7770, 7854, 8610, 8778, 8970, 9030, 9282, 9570, 9690, 9870, 10010, 10230, 10374, 10626, 11130, 11310, 11730, 12090, 12210, 12390, 12558, 12810, 13090, 13110 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 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 LINKS T. D. Noe, Table of n, a(n) for n = 1..10000 EXAMPLE a(1) = 2310 = 2 * 3 * 5 * 7 * 11 = A002110(5) = 5#. a(2) = 2730 = 2 * 3 * 5 * 7 * 13. a(3) = 3570 = 2 * 3 * 5 * 7 * 17. a(10) = 6006 = 2 * 3 * 7 * 11 * 13. MAPLE A046387 := proc(n)     option remember;     local a;     if n = 1 then         2*3*5*7*11 ;     else         for a from procname(n-1)+1 do             if A001221(a)= 5 and issqrfree(a) then                 return a;             end if;         end do:     end if; end proc: # R. J. Mathar, Oct 13 2019 MATHEMATICA 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 *) PROG (PARI) is(n)=factor(n)[, 2]==[1, 1, 1, 1, 1]~ \\ Charles R Greathouse IV, Sep 17 2015 (PARI) is(n)= omega(n)==5 && bigomega(n)==5 \\ Hugo Pfoertner, Dec 18 2018 CROSSREFS Cf. A067885 (product of 6 distinct primes). Cf. A000040, A000961, A001221, A005117, A000977, A002110, A006881, A007304, A007774, A033992, A033993, A046386. Cf. A014614, A046403, A051270. Sequence in context: A285487 A285744 A051270 * A136154 A258360 A076252 Adjacent sequences:  A046384 A046385 A046386 * A046388 A046389 A046390 KEYWORD easy,nonn AUTHOR Patrick De Geest, Jun 15 1998 EXTENSIONS Entry revised by N. J. A. Sloane, Apr 10 2006 STATUS approved

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Last modified July 27 01:13 EDT 2021. Contains 346300 sequences. (Running on oeis4.)