Number of n X n 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
A278669
Number of n X n 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
Terms
- a(0) =0a(1) =8a(2) =158a(3) =2650a(4) =55854a(5) =1998526a(6) =157706284a(7) =32788533228
External references
- oeis: A278669