Number of 2 X 2 matrices having all elements in {-n,...n} and determinant 5.

Terms

a(0) =0a(1) =0a(2) =8a(3) =64a(4) =128a(5) =408a(6) =472a(7) =664a(8) =792a(9) =984a(10) =1272a(11) =1592a(12) =1720a(13) =2104a(14) =2296a(15) =2872a(16) =3128a(17) =3640a(18) =3832a(19) =4408a(20) =4984a(21) =5368a(22) =5688a(23) =6392a(24) =6648a(25) =7928a(26) =8312a(27) =8888a(28) =9272a(29) =10168