Triangle T(n,k) giving number of nonisomorphic simple matroids of rank k on n labeled points (n >= 2, 2 <= k <= n).
A058730
Triangle T(n,k) giving number of nonisomorphic simple matroids of rank k on n labeled points (n >= 2, 2 <= k <= n).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =4a(8) =3a(9) =1a(10) =1a(11) =9a(12) =11a(13) =4a(14) =1a(15) =1a(16) =23a(17) =49a(18) =22a(19) =5a(20) =1a(21) =1a(22) =68a(23) =617a(24) =217a(25) =40a(26) =6a(27) =1a(28) =1a(29) =383
External references
- oeis: A058730