1048587

Appears in sequences

• a(n) = 2^n + 11.at n=20A267615
• Numerator of (0 followed by A005126(n)= 2, 4, 7, ...)/2^n.at n=22A271573
• a(n) = Sum_{d|n} d * 4^(n/d-1).at n=10A359190