40767domain: NAppears in sequencesRow sums of triangle A137712.at n=22A137713a(n) = 52*n^2 - 1.at n=27A158640Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2<=x^2+y^2.at n=38A211634G.f. satisfies A(x) = Product_{n>=0} (1 + (x*A(x)^2)^(3^n)).at n=9A391522