References to A005580

Least number of distinct prime factors in odd numbers having an abundancy index > n.
3, 8, 21, 54, 141, 372, 995, 2697, 7397, 20502, 57347, 16165


2 seqfan posts

Sun Oct 25 18:07:28 CET 2009    [seqfan] Re: Brick sequences
Sat Oct 24 23:45:30 CEST 2009    [seqfan] Re: Brick sequences

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