Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no element plus any antidiagonal neighbor equal to n-1.
A265869
Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no element plus any antidiagonal neighbor equal to n-1.
Terms
- a(0) =1a(1) =6a(2) =3136a(3) =3965392a(4) =21193260208
External references
- oeis: A265869