66176

Appears in sequences

• a(0)=0; for n>0, a(n) = Sum_{d|n} d*2^(n/d).at n=16A054598
• Integers that are Rhonda numbers to base 12.at n=30A100971
• Number of 0..1 arrays x(0..n-1) of n elements with zero n-1st difference.at n=31A200147
• Number of (w,x,y,z) with all terms in {1,...,n} and w*x<=y*z+1.at n=19A212053
• Number of length-n 0..7 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..7.at n=10A215400
• a(2n) = 2a(n)+2^(2n), a(2n+1) = 2^(2n+1), a(0)=0.at n=16A227326
• a(n) = Sum_{d|n} 2^d*phi(2*n/d).at n=15A306898
• a(n) is the first k such that n = Omega(k) = Omega(k-1) + Omega(k+1), or 0 if there is no such k, where Omega is A001222.at n=8A338302
• Numbers whose prime indices and prime signature have the same mean.at n=32A359903