Number of nX2 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.
A278890
Number of nX2 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) =0a(2) =161a(3) =12392a(4) =389640a(5) =7709668a(6) =112188011a(7) =1300739542a(8) =12621192562a(9) =105953411156a(10) =788164855062
External references
- oeis: A278890