Number of nX2 arrays containing 2 copies of 0..n-1 with no element 1 greater than its north or northeast neighbor modulo n and the upper left element equal to 0.
A266597
Number of nX2 arrays containing 2 copies of 0..n-1 with no element 1 greater than its north or northeast neighbor modulo n and the upper left element equal to 0.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =38a(4) =1197a(5) =64497a(6) =4975742a(7) =519665920a(8) =70425165645
External references
- oeis: A266597