T(n,k)=Number of nXk 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.

A278734

T(n,k)=Number of nXk 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.

Terms

    a(0) =0a(1) =6a(2) =6a(3) =40a(4) =152a(5) =40a(6) =155a(7) =1947a(8) =1947a(9) =155a(10) =456a(11) =17352a(12) =58904a(13) =17352a(14) =456a(15) =1128a(16) =121520a(17) =1410818a(18) =1410818a(19) =121520a(20) =1128a(21) =2472a(22) =712406a(23) =28637916a(24) =99992428a(25) =28637916a(26) =712406a(27) =2472a(28) =4950a(29) =3633649

External references