Number of 5-step S, E, and NW-moving king's tours on an n X n board summed over all starting positions.

A187510

Number of 5-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) =0a(2) =40a(3) =184a(4) =435a(5) =788a(6) =1243a(7) =1800a(8) =2459a(9) =3220a(10) =4083a(11) =5048a(12) =6115a(13) =7284a(14) =8555a(15) =9928a(16) =11403a(17) =12980a(18) =14659a(19) =16440a(20) =18323a(21) =20308a(22) =22395a(23) =24584a(24) =26875a(25) =29268a(26) =31763a(27) =34360a(28) =37059a(29) =39860

External references