References to A140525

a(1)=2. For n >=2, a(n) = the least integer >= a(n-1) that is not coprime to both a(n-1)+1 and a(n-1).
2, 6, 14, 18, 38, 42, 86, 90, 98, 102, 206, 210, 422, 426, 434, 438, 878, 882, 1766


2 seqfan posts

Mon Feb 9 14:31:01 CET 2009    [seqfan] Re: A sequence closely related to A140525
Mon Feb 9 13:23:15 CET 2009    [seqfan] A sequence closely related to A140525

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