Wiener index of the n X n knight graph.

Terms

a(0) =288a(1) =708a(2) =1580a(3) =3144a(4) =5804a(5) =9996a(6) =16388a(7) =25660a(8) =38808a(9) =56808a(10) =81048a(11) =112856a(12) =154080a(13) =206448a(14) =272332a(15) =353920a(16) =454172a(17) =575784a(18) =722372a(19) =897196a(20) =1104592a(21) =1348436a(22) =1633848a(23) =1965376a(24) =2348992a(25) =2789964a(26) =3295180a(27) =3870688a(28) =4524356a(29) =5263060