Number of n X n 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
A278771
Number of n X n 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
Terms
- a(0) =0a(1) =2a(2) =266a(3) =19750a(4) =1673658a(5) =251740932a(6) =90752836672
External references
- oeis: A278771