Number of length-n Catalan-RGS (restricted growth strings) such that the RGS is a valid mixed-radix number in falling factorial basis.

A206464

Number of length-n Catalan-RGS (restricted growth strings) such that the RGS is a valid mixed-radix number in falling factorial basis.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =26a(6) =74a(7) =218a(8) =672a(9) =2126a(10) =6908a(11) =22876a(12) =77100a(13) =263514a(14) =911992a(15) =3189762a(16) =11261448a(17) =40083806a(18) =143713968a(19) =518594034a(20) =1882217168a(21) =6867064856a(22) =25172021144a(23) =92666294090a(24) =342467464612

External references