Number of 2n-length strings of balanced parentheses of exactly 6 different types that are introduced in ascending order.

A258394

Number of 2n-length strings of balanced parentheses of exactly 6 different types that are introduced in ascending order.

Terms

    a(0) =132a(1) =9009a(2) =380380a(3) =12864852a(4) =383402292a(5) =10551322782a(6) =275335499824

External references