Number of (n+1) X (3+1) arrays of permutations of 0..n*4+3 filled by rows with each element moved a city block distance of 0 1 or 2, and rows and columns in increasing lexicographic order.
A263505
Number of (n+1) X (3+1) arrays of permutations of 0..n*4+3 filled by rows with each element moved a city block distance of 0 1 or 2, and rows and columns in increasing lexicographic order.
Terms
- a(0) =204a(1) =54924a(2) =8349744a(3) =1425379543a(4) =255768846517
External references
- oeis: A263505