Number of 7-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.

A187177

Number of 7-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =16a(6) =368a(7) =1600a(8) =4284a(9) =8760a(10) =15104a(11) =23144a(12) =32764a(13) =43944a(14) =56684a(15) =70984a(16) =86844a(17) =104264a(18) =123244a(19) =143784a(20) =165884a(21) =189544a(22) =214764a(23) =241544a(24) =269884a(25) =299784a(26) =331244a(27) =364264a(28) =398844a(29) =434984

External references