Number of 5 X 5 magic squares with line sum n.

Terms

a(0) =1a(1) =20a(2) =449a(3) =6792a(4) =67063a(5) =484419a(6) =2750715a(7) =12919671a(8) =52083292a(9) =185179593a(10) =592791088a(11) =1736022657a(12) =4710111660a(13) =11959634412a(14) =28654640036a(15) =65224656452a(16) =141850935657a(17) =296163412400a(18) =596041392921