Coordination sequence for C_8 lattice.

Terms

a(0) =1a(1) =128a(2) =2816a(3) =27008a(4) =157184a(5) =658048a(6) =2187520a(7) =6140800a(8) =15158272a(9) =33830016a(10) =69629696a(11) =134110592a(12) =244396544a(13) =425000576a(14) =710003968a(15) =1145628544a(16) =1793234944a(17) =2732779648a(18) =4066763520a(19) =5924704640