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A334146
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Numbers with at least two prime factors greater than 3 counted with multiplicity.
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0
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25, 35, 49, 50, 55, 65, 70, 75, 77, 85, 91, 95, 98, 100, 105, 110, 115, 119, 121, 125, 130, 133, 140, 143, 145, 147, 150, 154, 155, 161, 165, 169, 170, 175, 182, 185, 187, 190, 195, 196, 200, 203, 205, 209, 210, 215, 217, 220, 221, 225, 230, 231, 235, 238, 242
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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25 = 5*5
35 = 5*7
49 = 7*7
50 = (2)*5*5
55 = 5*11
65 = 5*13
70 = (2)*5*7
75 = (3)*5*5
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MATHEMATICA
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Select[Range[250], CompositeQ[# / 2^IntegerExponent[#, 2] / 3^IntegerExponent[#, 3]] &] (* Amiram Eldar, May 01 2020 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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