Triangle read by rows: T(n,k) is the number of nonequivalent ways (mod D_3) to place k points on an n X n X n triangular grid so that no two of them are on the same row, column or diagonal (n >= 1).
A283113
Triangle read by rows: T(n,k) is the number of nonequivalent ways (mod D_3) to place k points on an n X n X n triangular grid so that no two of them are on the same row, column or diagonal (n >= 1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =1a(7) =1a(8) =3a(9) =3a(10) =1a(11) =1a(12) =4a(13) =9a(14) =5a(15) =1a(16) =5a(17) =19a(18) =23a(19) =3a(20) =1a(21) =7a(22) =38a(23) =82a(24) =40a(25) =1a(26) =1a(27) =8a(28) =66a(29) =230
External references
- oeis: A283113