Coordination sequence for G_2 lattice.

Terms

a(0) =1a(1) =12a(2) =30a(3) =48a(4) =66a(5) =84a(6) =102a(7) =120a(8) =138a(9) =156a(10) =174a(11) =192a(12) =210a(13) =228a(14) =246a(15) =264a(16) =282a(17) =300a(18) =318a(19) =336a(20) =354a(21) =372a(22) =390a(23) =408a(24) =426a(25) =444a(26) =462a(27) =480a(28) =498a(29) =516