497640domain: NAppears in sequencesG.f.: 1/((1-x)*(1-x^2))^5.at n=19A038165Expansion of (5+10*x+x^2)/(1-x)^10.at n=9A059602Ordered products of the sides of primitive Pythagorean triangles.at n=19A063011a(n) = (32*n^3 - 2*n)/3.at n=36A267031a(n) = (5*n + 3)*(5*n + 4)*(5*n + 5)/6.at n=28A300522