Number of 8-step king-knight's tours (piece capable of both kinds of moves) on an n X n board summed over all starting positions.

A187856

Number of 8-step king-knight's tours (piece capable of both kinds of moves) on an n X n board summed over all starting positions.

Terms

    a(0) =0a(1) =0a(2) =49536a(3) =7067600a(4) =71450504a(5) =288493336a(6) =741624088a(7) =1474319716a(8) =2497432760a(9) =3806665836a(10) =5395343360a(11) =7259273932a(12) =9396774760a(13) =11807403172a(14) =14491089616a(15) =17447829164a(16) =20677621816a(17) =24180467572a(18) =27956366432a(19) =32005318396a(20) =36327323464

External references