Number of 3 X 3 magilatin squares with positive values < n.

Terms

a(0) =12a(1) =48a(2) =120a(3) =384a(4) =1068a(5) =2472a(6) =4896a(7) =9072a(8) =15516a(9) =25608a(10) =40296a(11) =61608a(12) =91068a(13) =131640a(14) =185136a(15) =255960a(16) =346860a(17) =463248a(18) =608088a(19) =789240a(20) =1010316a(21) =1280544a(22) =1604832a(23) =1994064a(24) =2454012a(25) =2998656a(26) =3633912a(27) =4376064a(28) =5232972a(29) =6223080