Number of nX7 arrays of permutations of 7 copies of 0..n-1 with rows and columns nondecreasing.
A265004
Number of nX7 arrays of permutations of 7 copies of 0..n-1 with rows and columns nondecreasing.
Terms
- a(0) =1a(1) =4a(2) =54a(3) =1720a(4) =97341a(5) =8360853a(6) =1001060834a(7) =155796077603
External references
- oeis: A265004