The number of paths of length 7*n from the origin to the line y = 2*x/5 with unit East and North steps that stay below the line or touch it.

A300386

The number of paths of length 7*n from the origin to the line y = 2*x/5 with unit East and North steps that stay below the line or touch it.

Terms

    a(0) =1a(1) =3a(2) =76a(3) =2803a(4) =121637a(5) =5782513a(6) =291437249a(7) =15297882929a(8) =827402061954

External references