Number of Dyck paths of semilength n having exactly 7 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).
A243419
Number of Dyck paths of semilength n having exactly 7 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).
Terms
- a(0) =1a(1) =17a(2) =184a(3) =1589a(4) =11802a(5) =78666a(6) =484163a(7) =2806039a(8) =15527186a(9) =82851064a(10) =429392845a(11) =2173167944a(12) =10783733773a(13) =52629404231a(14) =253233665755
External references
- oeis: A243419