69889

Appears in sequences

• a(1) = 1, a(2n) = 16a(n), a(2n+1) = a(2n)+1.at n=29A033052
• Constant term of the reduction by x^2->x+1 of the polynomial p(n,x) defined at Comments.at n=12A193046
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 278", based on the 5-celled von Neumann neighborhood.at n=16A280526
• a(n) = Sum_{k=0..floor(n/3)} 2^(n-3*k) * binomial(2*k,2*n-6*k).at n=27A387648