Number of nX(n+3) arrays of permutations of n+3 copies of 0..n-1 with every element equal to or 1 greater than any north, west or northwest neighbors modulo n and the upper left element equal to 0.
A267403
Number of nX(n+3) arrays of permutations of n+3 copies of 0..n-1 with every element equal to or 1 greater than any north, west or northwest neighbors modulo n and the upper left element equal to 0.
Terms
- a(0) =1a(1) =126a(2) =64a(3) =220a(4) =795a(5) =2814a(6) =9469a(7) =30728a(8) =95802a(9) =284725a(10) =817017a(11) =2266402
External references
- oeis: A267403