Number of diagonal dissections of an n-gon into 7 regions.

Terms

a(0) =0a(1) =429a(2) =5005a(3) =32032a(4) =148512a(5) =556920a(6) =1790712a(7) =5116320a(8) =13302432a(9) =32008977a(10) =72177105a(11) =153977824a(12) =313112800a(13) =610569960a(14) =1147334760a(15) =2086063200a(16) =3682355040a(17) =6329047725a(18) =10617908301a(19) =17424259776a(20) =28021470400a(21) =44233892560a(22) =68638798800a(23) =104830165440a(24) =157759842240