Number of (n+1) X (1+1) arrays of permutations of 0..n*2+1 filled by rows with each element moved a city block distance of 0 1 or 2, and rows and columns in increasing lexicographic order.
A263503
Number of (n+1) X (1+1) arrays of permutations of 0..n*2+1 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) =8a(1) =59a(2) =360a(3) =2196a(4) =13704a(5) =85189a(6) =528559a(7) =3280284a(8) =20360536a(9) =126365281a(10) =784254518a(11) =4867282254a(12) =30207532735a(13) =187474861266
External references
- oeis: A263503