Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change 0,1 1,0 2,1 or -1,-1.
A264481
Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change 0,1 1,0 2,1 or -1,-1.
Terms
- a(0) =2a(1) =64a(2) =384a(3) =10116a(4) =174927a(5) =3842048a(6) =74367790a(7) =1462247321a(8) =29509300516a(9) =577847245296
External references
- oeis: A264481