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

A278431

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

Terms

    a(0) =40a(1) =1609a(2) =57760a(3) =2116789a(4) =67971132a(5) =1796061464a(6) =39513263094a(7) =743248079740

External references