Number of 4-step king-knight's tours (piece capable of both kinds of moves) on an n X n board summed over all starting positions.

A187852

Number of 4-step king-knight's tours (piece capable of both kinds of moves) on an n X n board summed over all starting positions.

Terms

    a(0) =0a(1) =24a(2) =1400a(3) =7620a(4) =20952a(5) =41652a(6) =69456a(7) =104268a(8) =146088a(9) =194916a(10) =250752a(11) =313596a(12) =383448a(13) =460308a(14) =544176a(15) =635052a(16) =732936a(17) =837828a(18) =949728a(19) =1068636a(20) =1194552a(21) =1327476a(22) =1467408a(23) =1614348a(24) =1768296a(25) =1929252a(26) =2097216a(27) =2272188a(28) =2454168a(29) =2643156

External references