Number of 6Xn binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.

A266473

Number of 6Xn binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.

Terms

    a(0) =7a(1) =29a(2) =147a(3) =794a(4) =4074a(5) =18808a(6) =77320a(7) =285494a(8) =959672a(9) =2975483a(10) =8605341a(11) =23428725a(12) =60497931a(13) =149066593a(14) =352233950a(15) =801471439a(16) =1762213254a(17) =3755124007a(18) =7774777259a(19) =15675004492a(20) =30833594755a(21) =59276323572a(22) =111542905766a(23) =205731574732

External references