Wagstaff numbers: numbers n such that (2^n + 1)/3 is prime.
3, 5, 7, 11, 13, 17, 19, 23, 31, 43, 61, 79, 101, 127, 167, 191, 199, 313, 347, 701
2 seqfan posts
Sat Dec 4 13:07:56 CET 2010 [seqfan] Re: useless references?
Sat Dec 4 11:56:09 CET 2010 [seqfan] useless references?
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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