Number of 7-step E, S, NW and NE-moving king's tours on an n X n board summed over all starting positions.

A187590

Number of 7-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) =78a(3) =1708a(4) =7666a(5) =19104a(6) =35832a(7) =57592a(8) =84384a(9) =116208a(10) =153064a(11) =194952a(12) =241872a(13) =293824a(14) =350808a(15) =412824a(16) =479872a(17) =551952a(18) =629064a(19) =711208a(20) =798384a(21) =890592a(22) =987832a(23) =1090104a(24) =1197408a(25) =1309744a(26) =1427112a(27) =1549512a(28) =1676944a(29) =1809408

External references