Expansion of (1+x^3*C^4)*C, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

A071738

Expansion of (1+x^3*C^4)*C, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =19a(5) =62a(6) =207a(7) =704a(8) =2431a(9) =8502a(10) =30056a(11) =107236a(12) =385662a(13) =1396652a(14) =5088865a(15) =18642420a(16) =68624295a(17) =253706790a(18) =941630580a(19) =3507232740a(20) =13105289370a(21) =49114150020a(22) =184560753390a(23) =695267483664

External references