Number of 7-step one or two space at a time rook's tours on an n X n board summed over all starting positions.

A187292

Number of 7-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) =0a(2) =2304a(3) =47648a(4) =228512a(5) =616752a(6) =1241936a(7) =2102944a(8) =3192912a(9) =4505424a(10) =6037932a(11) =7789392a(12) =9759616a(13) =11948560a(14) =14356224a(15) =16982608a(16) =19827712a(17) =22891536a(18) =26174080a(19) =29675344a(20) =33395328a(21) =37334032a(22) =41491456a(23) =45867600a(24) =50462464a(25) =55276048a(26) =60308352

External references