Number of R&E Family matchings on n edges.

Terms

a(0) =1a(1) =3a(2) =14a(3) =84a(4) =592a(5) =4624a(6) =38527a(7) =334520a(8) =2985938a(9) =27183525a(10) =251204717a(11) =2349231434a(12) =22186989871a(13) =211295835831