Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 filled by rows with each element moved a city block distance of 0 or 1, and rows and columns in increasing lexicographic order.
A263521
Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 filled by rows with each element moved a city block distance of 0 or 1, and rows and columns in increasing lexicographic order.
Terms
- a(0) =23a(1) =208a(2) =2076a(3) =18369a(4) =158109a(5) =1317780a(6) =10791350a(7) =87194833a(8) =698250904a(9) =5555688785a(10) =44005119429a(11) =347432212188
External references
- oeis: A263521