Number of rank-(n-2) simple matroids on S_n.

A100728

Number of rank-(n-2) simple matroids on S_n.

Terms

    a(0) =1a(1) =31a(2) =337a(3) =2570a(4) =16865a(5) =104858a(6) =650761a(7) =4145956a(8) =27483392a(9) =190522216a(10) =1382087111a(11) =10478149999a(12) =82860356456a(13) =682066659044

External references