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A046391 Odd numbers with exactly 5 distinct prime factors. 5
15015, 19635, 21945, 23205, 25935, 26565, 31395, 33495, 33915, 35805, 36465, 39585, 40755, 41055, 42315, 42735, 45885, 47355, 49335, 49665, 50505, 51051, 51765, 53295, 54285, 55335, 55965, 57057, 57855, 58695, 61215, 61845, 62205 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

T. D. Noe, Table of n, a(n) for n=1..1000

FORMULA

A051270 INTERSECT A005408.

EXAMPLE

50505 = 3 * 5 * 7 * 13 * 37.

MAPLE

isA046391 := proc(n)

    type(n, 'odd') and (A001221(n) = 5 ) ;

end proc:

for n from 1 do

    if isA046391(n) then

        print(n);

    end if;

end do: # R. J. Mathar, Nov 10 2014

MATHEMATICA

f[n_]:=Last/@FactorInteger[n]=={1, 1, 1, 1, 1}&&FactorInteger[n][[1, 1]]>2; lst={}; Do[If[f[n], AppendTo[lst, n]], {n, 9!}]; lst (* Vladimir Joseph Stephan Orlovsky, Nov 23 2009 *)

CROSSREFS

Cf. A046318, A046407.

Sequence in context: A081635 A165614 A104875 * A112643 A129485 A249263

Adjacent sequences:  A046388 A046389 A046390 * A046392 A046393 A046394

KEYWORD

nonn

AUTHOR

Patrick De Geest, Jun 15 1998

STATUS

approved

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Last modified February 22 20:14 EST 2019. Contains 320403 sequences. (Running on oeis4.)