207389

Appears in sequences

• Number of steps to reach 0 when starting from (2^n)-1 and iterating the map x -> x - (number of runs in binary representation of x): a(n) = A255072(A000225(n)).at n=21A255062
• G.f. A(x) satisfies: A(x) = 1/(1 + (-x)^a(0)/(1 + (-x)^a(1)/(1 + (-x)^a(2)/(1 + (-x)^a(3)/(1 + ...))))), a continued fraction.at n=22A307543
• a(n) = Sum_{k=0..floor(2*n/7)} binomial(2*k+1,2*n-7*k).at n=39A392456