Number of n X n binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing.
A266422
Number of n X n binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing.
Terms
- a(0) =2a(1) =7a(2) =39a(3) =404a(4) =8764a(5) =448649a(6) =59155748a(7) =21325003746
External references
- oeis: A266422