209641

Appears in sequences

• a(n) = Sum_{k=1..n} binomial(n,k) * d(k), where d(k) = the number of positive divisors of k.at n=15A160399
• Number of compositions (ordered partitions) of n into distinct parts such that the average of the parts is an integer.at n=54A339175
• Total number of regions between the free polyominoes with n cells and their bounding boxes.at n=11A380285