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

A071741

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

Terms

    a(0) =1a(1) =4a(2) =14a(3) =49a(4) =173a(5) =616a(6) =2210a(7) =7982a(8) =29002a(9) =105944a(10) =388892a(11) =1433797a(12) =5307365a(13) =19717440a(14) =73496730a(15) =274797330a(16) =1030334910a(17) =3873215640a(18) =14595139140a(19) =55120449930a(20) =208601520114a(21) =790972319472

External references