Number of nX3 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.
A278891
Number of nX3 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.
Terms
- a(0) =0a(1) =161a(2) =52424a(3) =6888340a(4) =518626568a(5) =27351484380
External references
- oeis: A278891