Coordination sequence for D_6 lattice.

Terms

a(0) =1a(1) =60a(2) =792a(3) =4724a(4) =18096a(5) =52716a(6) =127816a(7) =271908a(8) =524640a(9) =938652a(10) =1581432a(11) =2537172a(12) =3908624a(13) =5818956a(14) =8413608a(15) =11862148a(16) =16360128a(17) =22130940a(18) =29427672a(19) =38534964a(20) =49770864a(21) =63488684a(22) =80078856