86840domain: NAppears in sequencesPlace n equally-spaced points around a circle and join every pair of points by a chord; this divides the circle into a(n) regions.at n=39A006533This sequence needs a meaningful name.at n=17A121794G.f. satisfies: A(x) = Product_{n>=1} 1/(1 - x^n*A(x)^(n^2)).at n=8A192768