Number of 2n-length strings of balanced parentheses of exactly 8 different types that are introduced in ascending order.

A258396

Number of 2n-length strings of balanced parentheses of exactly 8 different types that are introduced in ascending order.

Terms

    a(0) =1430a(1) =175032a(2) =12597000a(3) =698377680a(4) =33079524324

External references