Coordination sequence for A_11 lattice.

Terms

a(0) =1a(1) =132a(2) =4422a(3) =68772a(4) =643632a(5) =4197468a(6) =20934474a(7) =85014204a(8) =293744154a(9) =891454124a(10) =2432878866a(11) =6078578508a(12) =14097919968a(13) =30684132468a(14) =63221641758a(15) =124188986196a(16) =233931828834a(17) =424600608564a(18) =745616925614