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A368459
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Numbers k such that 2*(Bacher(k) - sigma(k)) + k + 1 < 0.
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5
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6, 8, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 26, 27, 28, 30, 32, 33, 34, 36, 38, 39, 40, 42, 44, 45, 46, 48, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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Complementary to A368458, this sequence lists the indices of negative values of A368457. See the comments in A368458.
In summary, A368458 U A368459 U Primes U {35, ...} decomposes the positive integers into disjoint sets, whereby the nature of the fourth set is currently unclear; probably, it has only 35 as a member.
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LINKS
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FORMULA
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PROG
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(Julia)
println([n for n in 1:95 if A368457(n) < 0])
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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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