2^n*(2*n)!.
1, 4, 96, 5760, 645120, 116121600, 30656102400, 11158821273600
3 seqfan posts
Thu Dec 24 02:19:40 CET 2009 [seqfan] Re: A012022, A065140 and sqrt(2)
Thu Dec 24 02:19:40 CET 2009 [seqfan] Re: A012022, A065140 and sqrt(2)
Wed Dec 23 15:22:12 CET 2009 [seqfan] A012022, A065140 and sqrt(2)
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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