Numbers n such that sigma_2(n)/(sigma_1(n)*sigma_0(n)) = c, c an integer.
1, 4, 25, 100, 121, 256, 289, 484, 529, 841, 1156, 1600, 1681, 2116, 2209, 2809
6 seqfan posts
Wed Aug 25 16:28:33 CEST 2010 [seqfan] Re: unable to reproduce A152218 (sigma divisibility)
Wed Aug 25 16:28:33 CEST 2010 [seqfan] Re: unable to reproduce A152218 (sigma divisibility)
Wed Aug 25 00:53:30 CEST 2010 [seqfan] Re: unable to reproduce A152218 (sigma divisibility)
Wed Aug 25 00:49:26 CEST 2010 [seqfan] Re: unable to reproduce A152218 (sigma divisibility)
Wed Aug 25 00:49:26 CEST 2010 [seqfan] Re: unable to reproduce A152218 (sigma divisibility)
Wed Aug 25 00:40:19 CEST 2010 [seqfan] unable to reproduce A152218 (sigma divisibility)
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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