T(n,k)=Number of nXk 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
A278676
T(n,k)=Number of nXk 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =4a(4) =8a(5) =4a(6) =10a(7) =33a(8) =33a(9) =10a(10) =20a(11) =99a(12) =158a(13) =99a(14) =20a(15) =35a(16) =245a(17) =579a(18) =579a(19) =245a(20) =35a(21) =56a(22) =532a(23) =1801a(24) =2650a(25) =1801a(26) =532a(27) =56a(28) =84a(29) =1050
External references
- oeis: A278676