Number of nXnXn triangular 0..6 arrays with new values introduced in sequential zero-upwards order and exactly one 2x2x2 triangle having values all equal.
A271074
Number of nXnXn triangular 0..6 arrays with new values introduced in sequential zero-upwards order and exactly one 2x2x2 triangle having values all equal.
Terms
- a(0) =0a(1) =1a(2) =35a(3) =20610a(4) =223627120
External references
- oeis: A271074