87791

Appears in sequences

• In the "3x+1" problem, let 1 denote a halving step and 0 denote an x->3x+1 step. Then a(n) is obtained by writing the sequence of steps needed to reach 1 from 2n and reading it as a decimal number.at n=6A125711
• Number of ways to build an expression using non-redundant parentheses in an expression of n variables, counted in decreasing sub-partitions of equal size.at n=10A245390