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 or northeast neighbors modulo n and the upper left element equal to 0.
A267556
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 or northeast neighbors modulo n and the upper left element equal to 0.
Terms
- a(0) =1a(1) =126a(2) =410a(3) =2437a(4) =21835a(5) =326500a(6) =7589059a(7) =271504873
External references
- oeis: A267556