Number of nonequivalent ways (mod D_3) to place 4 points on an n X n X n triangular grid so that no two of them are on the same row, column or diagonal.
A283115
Number of nonequivalent ways (mod D_3) to place 4 points on an n X n X n triangular grid so that no two of them are on the same row, column or diagonal.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =3a(6) =40a(7) =242a(8) =1038a(9) =3504a(10) =9998a(11) =25158a(12) =57410a(13) =121023a(14) =239148a(15) =447552a(16) =799764a(17) =1373400a(18) =2278290a(19) =3666036a(20) =5742396a(21) =8781111a(22) =13141326a(23) =19287246a(24) =27811906a(25) =39463424a(26) =55177122a(27) =76109826a(28) =103681214a(29) =139618479
External references
- oeis: A283115