69633

Appears in sequences

• a(1) = 1, a(2n) = 16a(n), a(2n+1) = a(2n)+1.at n=25A033052
• a(n) = n-th element of n-th row of triangle shown below.at n=17A115025
• a(n) = 68*n^2 + 1.at n=32A158732
• Number of subsets of {1..n} whose elements have the same number of distinct prime factors.at n=30A339512
• a(n) = Sum_{d|n} 4^(n-d).at n=8A359206