Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 5.
A166200
Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 5.
Terms
- a(0) =1a(1) =6a(2) =2a(3) =5a(4) =39a(5) =122a(6) =604a(7) =8064a(8) =40848a(9) =495985a(10) =16474555a(11) =153952919a(12) =4118194905a(13) =283350411160
External references
- oeis: A166200