Number of binary matrices with a total of n ones, distinct columns each with the same number of ones and distinct nonzero rows in decreasing lexicographic order.
A331654
Number of binary matrices with a total of n ones, distinct columns each with the same number of ones and distinct nonzero rows in decreasing lexicographic order.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =6a(6) =1a(7) =44a(8) =6a(9) =519a(10) =1a(11) =8363a(12) =1a(13) =163357a(14) =9427a(15) =3988615a(16) =1a(17) =117148318a(18) =1a(19) =3986012464a(20) =84012192a(21) =157783127674a(22) =1a(24) =248686a(28) =1a(30) =1
External references
- oeis: A331654