Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 13.
A166208
Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 13.
Terms
- a(0) =1a(1) =14a(2) =5a(3) =21a(4) =616a(5) =3614a(6) =65576a(7) =6508702a(8) =119636627a(9) =10193915255
External references
- oeis: A166208