Wiener index of the n X n queen graph.

Terms

a(0) =0a(1) =6a(2) =44a(3) =164a(4) =440a(5) =970a(6) =1876a(7) =3304a(8) =5424a(9) =8430a(10) =12540a(11) =17996a(12) =25064a(13) =34034a(14) =45220a(15) =58960a(16) =75616a(17) =95574a(18) =119244a(19) =147060a(20) =179480a(21) =216986a(22) =260084a(23) =309304a(24) =365200a(25) =428350a(26) =499356a(27) =578844a(28) =667464a(29) =765890