References to A072027

Swap (2,3) and all twin prime pairs >(3,5) in prime factorization of n.
1, 3, 2, 9, 7, 6, 5, 27, 4, 21, 13, 18, 11, 15, 14, 81, 19, 12, 17, 63, 10, 39, 23, 54, 49


2 seqfan posts

Thu Jun 24 15:22:13 CEST 2010    [seqfan] Re: 4-12-28-60
Wed Jun 23 22:36:42 CEST 2010    [seqfan] Re: 4-12-28-60

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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