Number of 5Xn binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.

A266938

Number of 5Xn binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.

Terms

    a(0) =6a(1) =19a(2) =44a(3) =100a(4) =210a(5) =429a(6) =816a(7) =1534a(8) =2727a(9) =4753a(10) =7931a(11) =13044a(12) =20676a(13) =32360a(14) =49327a(15) =73959a(16) =108612a(17) =157751a(18) =224746a(19) =317514a(20) =440564a(21) =606496a(22) =823905a(23) =1110469a(24) =1480403a(25) =1957027a(26) =2563177a(27) =3335398a(28) =4302564a(29) =5520403

External references