Number of matroids: column 5 of A034327.

A034331

Number of matroids: column 5 of A034327.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =4a(7) =17a(8) =60a(9) =192a(10) =556a(11) =1514

External references