Coordination sequence for D_4 lattice.

Terms

a(0) =1a(1) =24a(2) =144a(3) =456a(4) =1056a(5) =2040a(6) =3504a(7) =5544a(8) =8256a(9) =11736a(10) =16080a(11) =21384a(12) =27744a(13) =35256a(14) =44016a(15) =54120a(16) =65664a(17) =78744a(18) =93456a(19) =109896a(20) =128160a(21) =148344a(22) =170544a(23) =194856a(24) =221376a(25) =250200a(26) =281424a(27) =315144a(28) =351456