Number of 2-step one or two space at a time rook's tours on an n X n board summed over all starting positions.

A187287

Number of 2-step one or two space at a time rook's tours on an n X n board summed over all starting positions.

Terms

    a(0) =0a(1) =8a(2) =36a(3) =80a(4) =140a(5) =216a(6) =308a(7) =416a(8) =540a(9) =680a(10) =836a(11) =1008a(12) =1196a(13) =1400a(14) =1620a(15) =1856a(16) =2108a(17) =2376a(18) =2660a(19) =2960a(20) =3276a(21) =3608a(22) =3956a(23) =4320a(24) =4700a(25) =5096a(26) =5508a(27) =5936a(28) =6380a(29) =6840

External references