289176

Appears in sequences

• Sum of primes < 2^n.at n=10A130739
• G.f. A(x) satisfies: A(x) = 1 / (1 - 2*x) + x * (1 - 2*x)^2 * A(x)^4.at n=7A349581
• Expansion of e.g.f. 1 / (4 - 3 * exp(x))^2.at n=5A367472