Number of dissections of a convex polygon with n+3 sides that have exactly one triangle, and that triangle shares at least one side with the exterior polygon.

A255197

Number of dissections of a convex polygon with n+3 sides that have exactly one triangle, and that triangle shares at least one side with the exterior polygon.

Terms

    a(0) =1a(1) =0a(2) =5a(3) =6a(4) =35a(5) =80a(6) =306a(7) =880a(8) =3003a(9) =9384a(10) =31070a(11) =100226a(12) =330015a(13) =1079392a(14) =3559001a(15) =11724930a(16) =38772445a(17) =128313480a(18) =425553513a(19) =1412911148a(20) =4697992880a(21) =15637660896a(22) =52109660575a(23) =173809285676a(24) =580261793715

External references