Number of 3 X 3 determinants with elements from {0,...,n} and having the value zero.

Terms

a(0) =1a(1) =338a(2) =6891a(3) =49246a(4) =228737a(5) =716214a(6) =2110081a(7) =4663844a(8) =10289331a(9) =19945864a(10) =37518971a(11) =61582884a(12) =109478509a(13) =165518210a(14) =259500567a(15) =393804256a(16) =586056347a(17) =802076580a(18) =1171487431a(19) =1550250662a(20) =2174383653a(21) =2909581936a(22) =3842464925a(23) =4838646900a(24) =6528085915a(25) =8177178662a(26) =10347435783a(27) =12932799472