Number of 9-step self-avoiding king's tours on an n X n board summed over all starting positions.

A366829

Number of 9-step self-avoiding king's tours on an n X n board summed over all starting positions.

Terms

    a(0) =0a(1) =0a(2) =784a(3) =436984a(4) =3908376a(5) =13530576a(6) =30543072a(7) =54738536a(8) =85743256a(9) =123447704a(10) =167851880a(11) =218955784a(12) =276759416a(13) =341262776a(14) =412465864a(15) =490368680a(16) =574971224a(17) =666273496a(18) =764275496a(19) =868977224a(20) =980378680a(21) =1098479864a(22) =1223280776a(23) =1354781416a(24) =1492981784a(25) =1637881880

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