234795

Appears in sequences

• Number of distinct values taken by 7^7^...^7 (with n 7's and parentheses inserted in all possible ways).at n=15A145547
• Triangle T(n,k) with T(n,0)=1 and T(n,k) = (2^(n+1)-2^k)*T(n,k-1) + T(n+1,k-1) otherwise.at n=18A194583