Number of modified skew Dyck paths of semilength n such that the area between the x-axis and the path is n*(n+1)/2.
A274054
Number of modified skew Dyck paths of semilength n such that the area between the x-axis and the path is n*(n+1)/2.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =3a(5) =6a(6) =14a(7) =40a(8) =140a(9) =422a(10) =1346a(11) =4487a(12) =15234a(13) =52632a(14) =183913a(15) =651948a(16) =2336751a(17) =8438406a(18) =30712379a(19) =112603500a(20) =415459873a(21) =1541646225a(22) =5750112809a(23) =21548036621a(24) =81096740799a(25) =306404247854
External references
- oeis: A274054