T(n,k) = number of n-step one or two space at a time rook's tours on a k X k board summed over all starting positions.

A187286

T(n,k) = number of n-step one or two space at a time rook's tours on a k X k board summed over all starting positions.

Terms

    a(0) =1a(1) =4a(2) =0a(3) =9a(4) =8a(5) =0a(6) =16a(7) =36a(8) =8a(9) =0a(10) =25a(11) =80a(12) =108a(13) =8a(14) =0a(15) =36a(16) =140a(17) =328a(18) =288a(19) =0a(20) =0a(21) =49a(22) =216a(23) =672a(24) =1256a(25) =720a(26) =0a(27) =0a(28) =64a(29) =308

External references