Coordination sequence for C_11 lattice.

Terms

a(0) =1a(1) =242a(2) =9922a(3) =170610a(4) =1690370a(5) =11414898a(6) =58227906a(7) =240089586a(8) =838478850a(9) =2564399090a(10) =7039035586a(11) =17664712562a(12) =41110086402a(13) =89719625842a(14) =185263467202a(15) =364571790066a(16) =687750033410