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
- oeis: A278431