Number of ways to place 5 nonattacking wazirs on an n X n board.

Terms

a(0) =0a(1) =0a(2) =1a(3) =304a(4) =10741a(5) =127960a(6) =870589a(7) =4197456a(8) =16005187a(9) =51439096a(10) =145085447a(11) =369074128a(12) =863338777a(13) =1883786680a(14) =3875953561a(15) =7583888944a(16) =14206566327a(17) =25617069208a(18) =44663199283a(19) =75572017136a(20) =124485188701a(21) =200156902936a(22) =314851577749a(23) =485484612496a(24) =735056106571