Number of n X 4 binary arrays with rows and columns lexicographically nondecreasing and row and column sums nonincreasing.
A266543
Number of n X 4 binary arrays with rows and columns lexicographically nondecreasing and row and column sums nonincreasing.
Terms
- a(0) =2a(1) =4a(2) =6a(3) =12a(4) =16a(5) =27a(6) =36a(7) =57a(8) =76a(9) =114a(10) =149a(11) =213a(12) =276a(13) =379a(14) =485a(15) =645a(16) =811a(17) =1051a(18) =1304a(19) =1652a(20) =2021a(21) =2511a(22) =3034a(23) =3709a(24) =4431a(25) =5338a(26) =6311a(27) =7510a(28) =8795a(29) =10352
External references
- oeis: A266543