Maximal m such that n^n-m and n^n+m are both primes, or -1 if there is no such m.
1, 20, 253, 3122, 46651, 823540, 16777155, 387420478, 9999999939
3 seqfan posts
Fri Mar 26 01:27:20 CET 2010 [seqfan] Re: Eventually-signed sequences
Fri Mar 26 00:28:55 CET 2010 [seqfan] Re: Eventually-signed sequences
Thu Mar 25 22:49:57 CET 2010 [seqfan] Eventually-signed sequences
Index of A-numbers in seqfan: by ascending order
by month
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by keyword
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