Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north or northeast neighbors modulo n and the upper left element equal to 0.
A267555
Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north or northeast neighbors modulo n and the upper left element equal to 0.
Terms
- a(0) =1a(1) =35a(2) =83a(3) =350a(4) =2165a(5) =22189a(6) =345443a(7) =8164233a(8) =287561285
External references
- oeis: A267555