Number of 6-step E, S, NW and NE-moving king's tours on an n X n board summed over all starting positions.

A187589

Number of 6-step E, S, NW and NE-moving king's tours on an n X n board summed over all starting positions.

Terms

    a(0) =0a(1) =0a(2) =104a(3) =1069a(4) =3514a(5) =7480a(6) =12874a(7) =19696a(8) =27946a(9) =37624a(10) =48730a(11) =61264a(12) =75226a(13) =90616a(14) =107434a(15) =125680a(16) =145354a(17) =166456a(18) =188986a(19) =212944a(20) =238330a(21) =265144a(22) =293386a(23) =323056a(24) =354154a(25) =386680a(26) =420634a(27) =456016a(28) =492826a(29) =531064

External references