Number of n X n binary arrays with row sums nondecreasing and columns lexicographically nondecreasing.
A267239
Number of n X n binary arrays with row sums nondecreasing and columns lexicographically nondecreasing.
Terms
- a(0) =2a(1) =7a(2) =42a(3) =567a(4) =20040a(5) =2093467a(6) =683027146a(7) =723576702570
External references
- oeis: A267239