Number of binary matrices with a total of n ones, distinct columns each with the same number of ones and nonzero rows in nonincreasing lexicographic order.
A331391
Number of binary matrices with a total of n ones, distinct columns each with the same number of ones and nonzero rows in nonincreasing lexicographic order.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =2a(5) =14a(6) =2a(7) =76a(8) =31a(9) =801a(10) =2a(11) =12797a(12) =2a(13) =233247a(14) =28480a(15) =5560377a(16) =2a(17) =160866915a(18) =2a(19) =5351339038a(20) =193927186a(21) =208746406130a(22) =2a(24) =5289613a(28) =2a(30) =2
External references
- oeis: A331391