138180

Appears in sequences

• a(n) = sum of the perimeters of the Ferrers boards of the partitions of n. Also, sum of the perimeters of the diagrams of the regions of the set of partitions of n.at n=28A278355
• a(n) = [x^n] Product_{k>=1} (1 + n*x^k) / (1 - n*x^k).at n=6A292419
• Number of 2 X 2 square tiles in a discrete 4-dimensional hypercube of side length n.at n=14A387286