Number of (undirected) Hamiltonian paths on the first n cells of the 6 X ceiling(n/6) knight graph.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =0a(16) =0a(17) =0a(18) =0a(19) =0a(20) =53a(21) =1286a(22) =1172a(23) =744a(24) =207a(25) =800a(26) =4607a(27) =60293a(28) =40770a(29) =18784