Number of nX3 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
A233142
Number of nX3 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
Terms
- a(0) =6a(1) =225a(2) =13259a(3) =845917a(4) =54777233a(5) =3556749764a(6) =231058112982
External references
- oeis: A233142