Number of 5Xn binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing.
A266431
Number of 5Xn binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing.
Terms
- a(0) =6a(1) =34a(2) =212a(3) =1391a(4) =8764a(5) =49894a(6) =251381a(7) =1122721a(8) =4490732a(9) =16284683a(10) =54165714a(11) =166968275a(12) =481237398a(13) =1306708520a(14) =3364174219a(15) =8257222586a(16) =19412425379a(17) =43890267973a(18) =95767324137a(19) =202278568268a(20) =414691101885a(21) =827108931171
External references
- oeis: A266431