Number of ways to place 3 non-attacking wazirs on an n X n toroidal board.

Terms

a(0) =0a(1) =0a(2) =6a(3) =208a(4) =1300a(5) =4908a(6) =14112a(7) =34112a(8) =73008a(9) =142700a(10) =259908a(11) =447312a(12) =734812a(13) =1160908a(14) =1774200a(15) =2635008a(16) =3817112a(17) =5409612a(18) =7518908a(19) =10270800a(20) =13812708a(21) =18316012a(22) =23978512a(23) =31027008a(24) =39720000a(25) =50350508a(26) =63249012a(27) =78786512a(28) =97377708a(29) =119484300