39598

Appears in sequences

• Number of planar partitions of n, when partitions that are rotations of each other (when regarded as 3-D objects) are counted only once.at n=20A048139
• a(n) = Sum_{d|n} A007955(d) * A000027(d) = Sum_{d|n} A007955(d) * (d), where A007955(m) = product of divisors of m.at n=33A174933
• Regular triangle where T(n,k) is the number of antichains covering n vertices with k connected components.at n=16A317674