Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its northeast neighbor modulo 4 and the upper left element equal to 0.
A266657
Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its northeast neighbor modulo 4 and the upper left element equal to 0.
Terms
- a(0) =6a(1) =234a(2) =14540a(3) =1044230a(4) =81918724a(5) =6799306012a(6) =587026055968
External references
- oeis: A266657