Triangle T(n,m), [x*A(x)]^m=sum(n>=m T(n,m)*x^n), where A(x) satisfies x*A(x)^3= -(2*x*A(x)^2+sqrt(1-4*x*A(x)^2)-1)/(4*x*A(x)^2+sqrt(1-4*x*A(x)^2)-1).
A188110
Triangle T(n,m), [x*A(x)]^m=sum(n>=m T(n,m)*x^n), where A(x) satisfies x*A(x)^3= -(2*x*A(x)^2+sqrt(1-4*x*A(x)^2)-1)/(4*x*A(x)^2+sqrt(1-4*x*A(x)^2)-1).
Terms
- a(0) =1a(1) =3a(2) =1a(3) =28a(4) =6a(5) =1a(6) =350a(7) =65a(8) =9a(9) =1a(10) =5020a(11) =868a(12) =111a(13) =12a(14) =1a(15) =78023a(16) =12924a(17) =1581a(18) =166a(19) =15a(20) =1a(21) =1278340a(22) =205766a(23) =24468a(24) =2516a(25) =230a(26) =18a(27) =1a(28) =21740636a(29) =3428438
External references
- oeis: A188110