Number of nX3 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
A278794
Number of nX3 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
Terms
- a(0) =4a(1) =1713a(2) =145208a(3) =7196852a(4) =263134490a(5) =7804657491a(6) =197112382716
External references
- oeis: A278794