Number of (undirected) Hamiltonian paths on the first n cells of the 7 X ceiling(n/7) 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) =4a(19) =44a(20) =52a(21) =160a(22) =239a(23) =1595a(24) =1391a(25) =13438a(26) =13711a(27) =6378a(28) =1930a(29) =11394