%I #7 Jun 16 2016 23:28:08
%S 0,1,3,13,65,403,2885,23515,214805
%N Erroneous version of A002468.
%H A. Steen, <a href="http://resolver.sub.uni-goettingen.de/purl?PPN600494829_0015/DMDLOG_0031">Some formulas respecting the game of mousetrap</a>, Quart. J. Pure Applied Math., 15 (1878), 230-241.
%K dead
%O 2,3