Number of n X 3 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.
A278409
Number of n X 3 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.
Terms
- a(0) =1a(1) =264a(2) =9354a(3) =201539a(4) =3576730a(5) =58069125a(6) =859516239a(7) =11336482734a(8) =132278417831
External references
- oeis: A278409