T(n,k)=Number of nXk 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.

A278325

T(n,k)=Number of nXk 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =3a(5) =0a(6) =1a(7) =20a(8) =20a(9) =1a(10) =6a(11) =94a(12) =236a(13) =94a(14) =6a(15) =21a(16) =395a(17) =1678a(18) =1678a(19) =395a(20) =21a(21) =56a(22) =1492a(23) =9714a(24) =19854a(25) =9714a(26) =1492a(27) =56a(28) =126a(29) =4991

External references