Number of Dyck paths of semilength n such that all eight consecutive step patterns of length 3 occur at least once.

A243882

Number of Dyck paths of semilength n such that all eight consecutive step patterns of length 3 occur at least once.

Terms

    a(0) =1a(1) =21a(2) =124a(3) =636a(4) =2749a(5) =11265a(6) =44028a(7) =168673a(8) =636526a(9) =2385703a(10) =8903294a(11) =33177968a(12) =123602040a(13) =460821006a(14) =1720240295a(15) =6432225711a(16) =24095079682a(17) =90435264009a(18) =340097165156

External references