Number of matroids: column 5 of A034328.

A034335

Number of matroids: column 5 of A034328.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =5a(6) =17a(7) =52a(8) =146a(9) =388a(10) =975a(11) =2365

External references