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A226894
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Position of n-th harmonic number H(n) in the joint ranking of {H(k)} and {log k}, for k >= 1; complement of A226896.
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3
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3, 6, 9, 12, 14, 17, 20, 23, 25, 28, 31, 34, 37, 39, 42, 45, 48, 50, 53, 56, 59, 62, 64, 67, 70, 73, 75, 78, 81, 84, 87, 89, 92, 95, 98, 101, 103, 106, 109, 112, 114, 117, 120, 123, 126, 128, 131, 134, 137, 139, 142, 145, 148, 151, 153, 156, 159, 162, 164
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OFFSET
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1,1
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COMMENTS
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If, in the definition, log k is replaced by g + log k, where g is the Euler-Mascheroni constant, then the position of H(n) is 2n, and limit[1/(H(n) - g - log n) - 2n] = 1/3.
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LINKS
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EXAMPLE
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log 1 < log 2 < H(1) < log 3 < log 4 < H(2) < ...
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MATHEMATICA
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z = 300; h[n_] := N[HarmonicNumber[n], 100]; t1 = Table[h[n], {n, 1, z}]; t2 = Table[N[Log[n], 100], {n, 1, 3 z}]; t3 = Union[t1, t2]; p[n_] := Position[t3, h[n]]
Flatten[Table[p[n], {n, 1, 3 z}]] (* A226894 *)
Complement[Range[z], %%] (* A226896 *)
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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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