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%I #3 Mar 30 2012 16:50:04
%S 6728,75272,1113032,14601608,206700000,2832600000,39626000000,
%T 549520000000,7662700000000,106600000000000,1485300000000000,
%U 20681000000000000,288070000000000000,4011900000000000000
%N Number of perfect matchings in a certain class of graphs.
%K nonn,obsc
%O 0,1
%A jind (lemonegg(AT)163.com), Nov 12 2004
%E I would like a better description as well as the author's name! - _N. J. A. Sloane_, Nov 12 2004