Wiener index of the n-polygon diagonal intersection graph.

Terms

a(0) =3a(1) =12a(2) =75a(3) =369a(4) =2744a(5) =5284a(6) =47502a(7) =75010a(8) =447777a(9) =305928a(10) =2826213a(11) =2737574a(12) =13415370a(13) =11249496a(14) =51687174a(15) =20411883a(16) =169877974a(17) =130816100a(18) =491279628a(19) =374381117a(20) =1284687103a(21) =589507200a(22) =3090684250a(23) =2235035062a(24) =6923313000a(25) =4868270582a(26) =14611365945a(27) =4263149880