Number of Dyck paths of semilength n having exactly 6 (possibly overlapping) occurrences of the consecutive steps UDUUUDDDUD (with U=(1,1), D=(1,-1)).
A243876
Number of Dyck paths of semilength n having exactly 6 (possibly overlapping) occurrences of the consecutive steps UDUUUDDDUD (with U=(1,1), D=(1,-1)).
Terms
- a(0) =1a(1) =8a(2) =50a(3) =295a(4) =1674a(5) =9255a(6) =50037a(7) =265190a(8) =1381151a(9) =7083239a(10) =35832547a(11) =179064335a(12) =885033494a(13) =4330974280a(14) =21002926804a(15) =101014451257a(16) =482163988802
External references
- oeis: A243876