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

A267248

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

Terms

    a(0) =6a(1) =63a(2) =486a(3) =3351a(4) =20040a(5) =107015a(6) =516084a(7) =2278687a(8) =9303052a(9) =35428544a(10) =126753732a(11) =428651446a(12) =1377310514a(13) =4223642819a(14) =12409437728a(15) =35050866249a(16) =95459908872a(17) =251341796912a(18) =641282264972

External references