Denominator of the n-th alternating harmonic number, sum ((-1)^(k+1)/k, k=1..n).
1, 2, 6, 12, 60, 60, 420, 840, 2520, 2520, 27720, 27720, 360360, 360360, 72072
3 seqfan posts
Tue Jun 23 22:51:21 CEST 2009 [seqfan] Re: Questions concerning A003418 and A002944.
Tue Jun 23 20:42:49 CEST 2009 [seqfan] Re: Questions concerning A003418 and A002944.
Tue Jun 23 19:30:23 CEST 2009 [seqfan] Questions concerning A003418 and A002944.
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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