Number of 7-step king-knight's tours (piece capable of both kinds of moves) on an n X n board summed over all starting positions.
A187855
Number of 7-step king-knight's tours (piece capable of both kinds of moves) on an n X n board summed over all starting positions.
Terms
- a(0) =0a(1) =0a(2) =35328a(3) =1533064a(4) =10353632a(5) =33908456a(6) =76860784a(7) =140714528a(8) =225295032a(9) =330074144a(10) =454720992a(11) =599118736a(12) =763244128a(13) =947095136a(14) =1150671760a(15) =1373974000a(16) =1617001856a(17) =1879755328a(18) =2162234416a(19) =2464439120a(20) =2786369440a(21) =3128025376
External references
- oeis: A187855