Number of n X n X n triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 16.
A166211
Number of n X n X n triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 16.
Terms
- a(0) =1a(1) =17a(2) =6a(3) =30a(4) =1207a(5) =8387a(6) =211677a(7) =34490146a(8) =884190706a(9) =123191992504
External references
- oeis: A166211