Number of square binary matrices with n ones, with no zero rows or columns, up to row and column permutation.

A057151

Number of square binary matrices with n ones, with no zero rows or columns, up to row and column permutation.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =18a(6) =41a(7) =102a(8) =252a(9) =666a(10) =1789a(11) =5031a(12) =14486a(13) =43280a(14) =132777a(15) =420267a(16) =1366307a(17) =4566966a(18) =15661086a(19) =55081118a(20) =198425478a(21) =731661754a(22) =2758808581a(23) =10629386376a(24) =41814350148a(25) =167830018952a(26) =686822393793

External references