70671

Appears in sequences

• Let f(x) be the absolute value of the difference between x and its base-2 reversal. Let g(x) be the number of times f(x) must be applied to x for the result to be 0. a(n) is the smallest value of x for which g(x) is n.at n=13A259658
• a(n) = number of decimal digits of A007505(n).at n=47A275247