Number of nXnXn triangular 0..3 arrays with some element less than a w, nw or ne neighbor exactly once.
A271029
Number of nXnXn triangular 0..3 arrays with some element less than a w, nw or ne neighbor exactly once.
Terms
- a(0) =0a(1) =20a(2) =294a(3) =3114a(4) =29120a(5) =256020a(6) =2173554a(7) =18060096a(8) =147976270a(9) =1201034302a(10) =9684108034a(11) =77719446198a(12) =621623562780
External references
- oeis: A271029