T(n,k)=Number of nXk 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.
A278855
T(n,k)=Number of nXk 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =1a(9) =0a(10) =0a(11) =25a(12) =66a(13) =25a(14) =0a(15) =1a(16) =239a(17) =1348a(18) =1348a(19) =239a(20) =1a(21) =8a(22) =1486a(23) =15066a(24) =30772a(25) =15066a(26) =1486a(27) =8a(28) =36a(29) =7072
External references
- oeis: A278855