Number of ballot sequences of length n having largest descent 4.

A244200

Number of ballot sequences of length n having largest descent 4.

Terms

    a(0) =1a(1) =7a(2) =43a(3) =215a(4) =1073a(5) =5058a(6) =23953a(7) =112217a(8) =530779a(9) =2506867a(10) =11965685a(11) =57344884a(12) =277801349a(13) =1354273789a(14) =6670778019a(15) =33102793363a(16) =165896192078a(17) =837960354362

External references