Number of nX6 binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.
A266468
Number of nX6 binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.
Terms
- a(0) =2a(1) =8a(2) =39a(3) =261a(4) =2090a(5) =18808a(6) =175180a(7) =1595005a(8) =13720886a(9) =109830369a(10) =814603355a(11) =5605474331a(12) =35922351069a(13) =215377645103
External references
- oeis: A266468