Number of nXnXn triangular 0..2 arrays with some element less than a w, nw or ne neighbor exactly once.
A271028
Number of nXnXn triangular 0..2 arrays with some element less than a w, nw or ne neighbor exactly once.
Terms
- a(0) =0a(1) =8a(2) =72a(3) =450a(4) =2420a(5) =12010a(6) =56754a(7) =259628a(8) =1160936a(9) =5105144a(10) =22166760a(11) =95301932a(12) =406510934a(13) =1722863088a(14) =7263024536a(15) =30481913682a(16) =127442700854a(17) =531088604958
External references
- oeis: A271028