Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 filled by rows with each element moved a city block distance of 0 or 2, and rows and columns in increasing lexicographic order.
A263604
Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 filled by rows with each element moved a city block distance of 0 or 2, and rows and columns in increasing lexicographic order.
Terms
- a(0) =8a(1) =144a(2) =1687a(3) =13455a(4) =105222a(5) =747253a(6) =4989566a(7) =31815696a(8) =196013762a(9) =1173794801a(10) =6879522980a(11) =39647344852a(12) =225498976846
External references
- oeis: A263604