Number of 7X7X7 triangular 0..n arrays with some element less than a w, nw or ne neighbor exactly once.

A271039

Number of 7X7X7 triangular 0..n arrays with some element less than a w, nw or ne neighbor exactly once.

Terms

    a(0) =642a(1) =56754a(2) =2173554a(3) =50108414a(4) =804566180a(5) =9790184488a(6) =95420380090a(7) =774600507974

External references