A diagonal in the array A158825 of coefficients of successive iterations of x*C(x), where C(x) is the Catalan function (A000108).
A158834
A diagonal in the array A158825 of coefficients of successive iterations of x*C(x), where C(x) is the Catalan function (A000108).
Terms
- a(0) =1a(1) =4a(2) =30a(3) =315a(4) =4200a(5) =67620a(6) =1273668a(7) =27454218a(8) =666200106a(9) =17968302638a(10) =533188477536
External references
- oeis: A158834