(C(2p,p)-2)/(2p) where p runs through the primes.
1, 3, 25, 245, 32065, 400023, 68635477, 930138521, 178987624513
2 seqfan posts
Sun Sep 5 13:08:02 CEST 2010 [seqfan] Re: A misprint in title of A086655
Sun Sep 5 12:51:58 CEST 2010 [seqfan] A misprint in title of A086655
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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