Number of nXnXn triangular 0..2 arrays with new values introduced in sequential zero-upwards order and exactly one upright 2x2x2 triangle having values all equal.
A271334
Number of nXnXn triangular 0..2 arrays with new values introduced in sequential zero-upwards order and exactly one upright 2x2x2 triangle having values all equal.
Terms
- a(0) =0a(1) =1a(2) =33a(3) =3798a(4) =960152a(5) =577747260a(6) =859484671068
External references
- oeis: A271334