Number of nX3 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.

A278549

Number of nX3 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.

Terms

    a(0) =4a(1) =1531a(2) =124564a(3) =6207774a(4) =256173362a(5) =9647190761a(6) =327443433750

External references