16777321

Appears in sequences

• a(n) = Sum_{d|n} d*2^(n/d - 1).at n=25A054599
• a(n) = Sum_{d|n, d odd} d*2^(n/d - 1), a(0)=0.at n=25A054601
• Expansion of Sum_{k>0} k * x^k / (1 - 2*x^(2*k)).at n=48A364035