261544

Appears in sequences

• Sum of the perimeters of all regions of the n-th section of a modular table of partitions.at n=39A278602
• The number of regions inside a diagonal-edged (or diamond-shaped) checkerboard of width and height 2*n-1 formed by the straight line segments mutually connecting any two of the 8*n-4 vertices on the perimeter.at n=8A333434