52921

Appears in sequences

• 4-dimensional analog of centered polygonal numbers. Also number of regions created by sides and diagonals of a convex n-gon in general position.at n=35A006522
• Number of regions in regular n-gon with all diagonals drawn.at n=34A007678
• Denominators of continued fraction convergents to sqrt(460).at n=10A041877
• Row sums of triangle defined in A120852.at n=21A160963
• Number of minimal total dominating sets in the n-barbell graph.at n=21A302650
• Number of regions in a polygon whose boundary consists of n+2 equally spaced points around the arc of a semicircle. See Comments for precise definition.at n=32A333643
• a(n) = A007678(2*n+1).at n=17A341735
• Number of non-quanimous subsets of {1..n}, meaning there is only one set partition with all equal block-sums.at n=17A371789
• Expansion of e.g.f. exp(x/(1 + x^4)^(1/4)).at n=9A373540