Number of standard paths of length n in composition poset.

A007555

Number of standard paths of length n in composition poset.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =23a(5) =107a(6) =586a(7) =3690a(8) =26245a(9) =207997a(10) =1817090a(11) =17345358a(12) =179595995a(13) =2004596903a(14) =23992185226a(15) =306497734962

External references