Number of nX5 arrays of permutations of 5 copies of 0..n-1 with every element equal to at least one horizontal neighbor and the top left element equal to 0.
A267722
Number of nX5 arrays of permutations of 5 copies of 0..n-1 with every element equal to at least one horizontal neighbor and the top left element equal to 0.
Terms
- a(0) =1a(1) =5a(2) =58a(3) =1398a(4) =55896a(5) =3353880a(6) =281725200a(7) =31553227440
External references
- oeis: A267722