1719312

Appears in sequences

• Number of distinct values taken by 8^8^...^8 (with n 8's and parentheses inserted in all possible ways).at n=17A145548
• Number of (n+1) X 3 binary arrays with every 2 X 2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2 X 2 subblock traces.at n=8A186932