Number of 4-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.
A187174
Number of 4-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) =8a(4) =48a(5) =176a(6) =384a(7) =664a(8) =1016a(9) =1440a(10) =1936a(11) =2504a(12) =3144a(13) =3856a(14) =4640a(15) =5496a(16) =6424a(17) =7424a(18) =8496a(19) =9640a(20) =10856a(21) =12144a(22) =13504a(23) =14936a(24) =16440a(25) =18016a(26) =19664a(27) =21384a(28) =23176a(29) =25040
External references
- oeis: A187174