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A118671
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Primitive elements of A096490.
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0
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60, 168, 252, 792, 924, 936, 2448, 2736, 6624, 6864, 6930, 9936, 12528, 18564, 20748, 23256, 24570, 26784, 28152, 31968, 35424, 37152, 40176, 40608, 40950, 58344, 65208, 87516, 91584, 94392, 96048, 101952, 102672, 105408, 106488, 113832, 115776, 122544, 135792
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OFFSET
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1,1
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COMMENTS
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Members of A096490 that are not divisible by any smaller member of that sequence.
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LINKS
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MATHEMATICA
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Select[6*Range[23000], DivisorSigma[-2, #] > 3/2 && Max[DivisorSigma[-2, #/(FactorInteger[#][[;; , 1]])]] < 3/2 &] (* Amiram Eldar, Aug 16 2024 *)
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PROG
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(PARI) is(k) = {!(k % 6) && if(sigma(k, -2) < 3/2, return(0)); fordiv(k, d, if(d < k && sigma(d, -2) >= 3/2, return(0))); 1; } \\ Amiram Eldar, Aug 16 2024
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CROSSREFS
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KEYWORD
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nonn,changed
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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