Number of nX2 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.
A278650
Number of nX2 0..2 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) =24a(3) =1076a(4) =19893a(5) =235446a(6) =2080575a(7) =14836233a(8) =89504692a(9) =471646066a(10) =2221297222a(11) =9512455863a(12) =37536099773a(13) =137924875200a(14) =475940969064
External references
- oeis: A278650