440672385

Appears in sequences

• a(n) = a(n-1)*2^n + 1 where a(0)=1.at n=7A073587
• a(n) = Sum_{k=0..floor(n/2)} 2^((n-2*k)*k) for n>=0.at n=15A117403
• Duplicate of A073587.at n=7A182104