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A084227
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Numbers of the form p*q^k with distinct primes p and q, k>0.
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5
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6, 10, 12, 14, 15, 18, 20, 21, 22, 24, 26, 28, 33, 34, 35, 38, 39, 40, 44, 45, 46, 48, 50, 51, 52, 54, 55, 56, 57, 58, 62, 63, 65, 68, 69, 74, 75, 76, 77, 80, 82, 85, 86, 87, 88, 91, 92, 93, 94, 95, 96, 98, 99, 104, 106, 111, 112, 115, 116, 117, 118, 119, 122, 123, 124, 129
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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EXAMPLE
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80 = 5*2^4, therefore 80 is a term.
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MATHEMATICA
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doit[{p_, q_}]:=Table[{p q^k, q p^k}, {k, 10}]; Take[Union[Flatten[ doit/@ Subsets[Prime[Range[20]], {2}]]], 70] (* Harvey P. Dale, May 09 2012 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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