Median Euler numbers (the middle numbers of Arnold's shuttle triangle).
1, 1, 4, 46, 1024, 36976, 1965664, 144361456, 13997185024, 1731678144256
3 seqfan posts
Wed Dec 22 22:05:45 CET 2010 [seqfan] Re: A000657 Median Euler numbers
Wed Dec 22 21:53:32 CET 2010 [seqfan] Re: A000657 Median Euler numbers
Wed Dec 22 21:19:54 CET 2010 [seqfan] A000657 Median Euler numbers
Index of A-numbers in seqfan: by ascending order
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