Number of dissections of an n-gon, rooted at an exterior edge, asymmetric with respect to that edge.

A000150

Number of dissections of an n-gon, rooted at an exterior edge, asymmetric with respect to that edge.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =2a(4) =7a(5) =20a(6) =66a(7) =212a(8) =715a(9) =2424a(10) =8398a(11) =29372a(12) =104006a(13) =371384a(14) =1337220a(15) =4847208a(16) =17678835a(17) =64821680a(18) =238819350a(19) =883629164a(20) =3282060210a(21) =12233125112a(22) =45741281820a(23) =171529777432a(24) =644952073662

External references