Number of 2 X 2 matrices having all elements in {-n,...n} and determinant 3.

Terms

a(0) =0a(1) =0a(2) =24a(3) =176a(4) =240a(5) =368a(6) =528a(7) =720a(8) =848a(9) =1232a(10) =1360a(11) =1680a(12) =2000a(13) =2384a(14) =2576a(15) =3216a(16) =3472a(17) =3984a(18) =4368a(19) =4944a(20) =5200a(21) =6160a(22) =6480a(23) =7184a(24) =7824a(25) =8464a(26) =8848a(27) =10000a(28) =10384a(29) =11280