Numbers n such that 5n-1 is not prime
1, 2, 3, 5, 7, 8, 9, 10, 11, 13, 14, 15, 17, 19, 20, 21, 23, 24, 25, 26, 27, 29, 31, 32, 33
3 seqfan posts
Fri Jan 30 15:12:53 CET 2009 [seqfan] R: Seqfan Digest, Vol 4, Issue 19
Sat Jan 24 16:18:52 CET 2009 [seqfan] Re: [OEIS] Wrong comments
Fri Jan 23 22:33:20 CET 2009 [seqfan] [OEIS] Wrong comments
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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