Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 14.
A166209
Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 14.
Terms
- a(0) =1a(1) =15a(2) =5a(3) =24a(4) =768a(5) =4862a(6) =99088a(7) =11604117a(8) =241988291a(9) =24508598458
External references
- oeis: A166209