Number of 7Xn binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.
A266474
Number of 7Xn binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.
Terms
- a(0) =8a(1) =42a(2) =303a(3) =2574a(4) =22128a(5) =175180a(6) =1231170a(7) =7652503a(8) =42460424a(9) =212971589a(10) =977395362a(11) =4147719749a(12) =16420984346a(13) =61103700814a(14) =215040758842a(15) =719522481940
External references
- oeis: A266474