Number of 10-step E, S, NW and NE-moving king's tours on an n X n board summed over all starting positions.

A187593

Number of 10-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) =0a(3) =3108a(4) =45960a(5) =219432a(6) =609070a(7) =1243461a(8) =2111652a(9) =3201436a(10) =4508924a(11) =6034116a(12) =7777012a(13) =9737612a(14) =11915916a(15) =14311924a(16) =16925636a(17) =19757052a(18) =22806172a(19) =26072996a(20) =29557524a(21) =33259756a(22) =37179692a(23) =41317332a(24) =45672676a(25) =50245724a(26) =55036476a(27) =60044932

External references