T(n,k) = number of n X k binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.
A266470
T(n,k) = number of n X k binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.
Terms
- a(0) =2a(1) =2a(2) =3a(3) =2a(4) =4a(5) =4a(6) =2a(7) =5a(8) =7a(9) =5a(10) =2a(11) =6a(12) =12a(13) =12a(14) =6a(15) =2a(16) =7a(17) =19a(18) =29a(19) =19a(20) =7a(21) =2a(22) =8a(23) =28a(24) =66a(25) =67a(26) =29a(27) =8a(28) =2a(29) =9
External references
- oeis: A266470