Number of nXnXn triangular 0..2 arrays with some element plus some adjacent element totalling 2 exactly once.
A270251
Number of nXnXn triangular 0..2 arrays with some element plus some adjacent element totalling 2 exactly once.
Terms
- a(0) =0a(1) =12a(2) =66a(3) =468a(4) =3612a(5) =40020a(6) =601368a(7) =12473568a(8) =355574028a(9) =13968754800a(10) =756926837340
External references
- oeis: A270251