T(n,k)=number of nXk binary matrices with rows in lexicographically nondecreasing order and columns in strictly increasing order.

A180988

T(n,k)=number of nXk binary matrices with rows in lexicographically nondecreasing order and columns in strictly increasing order.

Terms

    a(0) =2a(1) =1a(2) =3a(3) =0a(4) =4a(5) =4a(6) =0a(7) =3a(8) =10a(9) =5a(10) =0a(11) =1a(12) =21a(13) =20a(14) =6a(15) =0a(16) =0a(17) =33a(18) =85a(19) =35a(20) =7a(21) =0a(22) =0a(23) =34a(24) =330a(25) =260a(26) =56a(27) =8a(28) =0a(29) =0

External references