Number of nX4 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
A278774
Number of nX4 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
Terms
- a(0) =1a(1) =117a(2) =1972a(3) =19750a(4) =150085a(5) =955347a(6) =5355983a(7) =27218249a(8) =127644118a(9) =559023840a(10) =2305566900a(11) =9009824325a(12) =33520023813a(13) =119176965881a(14) =406212717567
External references
- oeis: A278774