2246244

Appears in sequences

• Sixth column (m=5) of triangle A060098.at n=20A060101
• Sixth column (m=5) of triangle A060102.at n=10A060105
• Number T(n,k) of 2n-length strings of balanced parentheses of exactly k different types that are introduced in ascending order; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=52A253180
• Number of 2n-length strings of balanced parentheses of exactly 7 different types that are introduced in ascending order.at n=2A258395