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A134606
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Numbers such that the square root of the sum of squares of their prime factors is a nonprime integer.
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2
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16, 81, 351, 512, 625, 1080, 1260, 1350, 1375, 1792, 1836, 2070, 2145, 2175, 2401, 2730, 2772, 3510, 4104, 4305, 4625, 4650, 4655, 4998, 5880, 6000, 6545, 7098, 7182, 7791, 7889, 7956, 9030, 9108, 9295, 9324, 10098, 10368, 10545, 11628, 11935, 12096
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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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EXAMPLE
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a(3)=351, since 351=3*3*3*13 and sqrt(3*3^2+13^2)=sqrt(196)=14.
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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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