Least k such that H(k) >= n, where H(k) is the harmonic number sum_{i=1..k} 1/i.
0, 1, 4, 11, 31, 83, 227, 616, 1674, 4550, 12367, 33617, 91380, 248397, 675214
3 seqfan posts
Wed Jun 17 18:02:31 CEST 2009 [seqfan] Re: Suggested method to generate A004080 b-file
Wed Jun 17 16:56:43 CEST 2009 [seqfan] Re: Suggested method to generate A004080 b-file
Wed Jun 17 16:16:28 CEST 2009 [seqfan] Suggested method to generate A004080 b-file
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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