Number of trivalent dissections of a rectangle into n rectangles.

A375131

Number of trivalent dissections of a rectangle into n rectangles.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =22a(5) =108a(6) =668a(7) =5026a(8) =43005a(9) =389803

External references