E.g.f.: exp(-2*x)/(1-x).
1, 1, 2, 2, 8, 8, 112, 656, 5504, 49024, 491264, 5401856, 64826368, 842734592
4 seqfan posts
Tue Dec 6 04:12:00 CET 2011 [seqfan] Re: Use of Easy keyword
Tue Dec 6 04:03:29 CET 2011 [seqfan] Re: Use of Easy keyword
Mon Feb 14 00:09:22 CET 2011 [seqfan] updated list of formulas (conjectures)
Fri Oct 29 05:35:16 CEST 2010 [seqfan] Implementing first 500 sequences in Java
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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