%I M2679 #14 Oct 13 2015 01:38:14
%S 1,1,1,3,7,20,131,815,5142,36800,272093,2077909,16176607,127997683,
%T 1025727646,8310377815,68217725764,560527576100,4556993996246
%N Erroneous version of A182322.
%K dead
%O 1,4