Number of 3-step S, E, and NW-moving king's tours on an n X n board summed over all starting positions.
A187508
Number of 3-step S, E, and NW-moving king's tours on an n X n board summed over all starting positions.
Terms
- a(0) =0a(1) =6a(2) =31a(3) =74a(4) =135a(5) =214a(6) =311a(7) =426a(8) =559a(9) =710a(10) =879a(11) =1066a(12) =1271a(13) =1494a(14) =1735a(15) =1994a(16) =2271a(17) =2566a(18) =2879a(19) =3210a(20) =3559a(21) =3926a(22) =4311a(23) =4714a(24) =5135a(25) =5574a(26) =6031a(27) =6506a(28) =6999a(29) =7510
External references
- oeis: A187508