3058990

Appears in sequences

• Number of n X n 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.at n=4A278318
• Number of nX5 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.at n=4A278322
• T(n,k)=Number of nXk 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.at n=40A278325