Number of nX7 binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.
A266934
Number of nX7 binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.
Terms
- a(0) =2a(1) =6a(2) =21a(3) =115a(4) =816a(5) =7185a(6) =68890a(7) =671796a(8) =6347005a(9) =56180274a(10) =460040399a(11) =3470013146a(12) =24151911854a(13) =155703390684
External references
- oeis: A266934