Number of nX2 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
A278793
Number of nX2 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
Terms
- a(0) =0a(1) =44a(2) =1713a(3) =34348a(4) =468496a(5) =4888659a(6) =41698446a(7) =303361302a(8) =1938464178a(9) =11113364813a(10) =58083296635a(11) =280168918756
External references
- oeis: A278793