149178domain: NAppears in sequencesNumber of trees in an n-node wheel.at n=28A002985a(n) = 6*n^2*(2*n + 1).at n=23A190705Numbers k such that k, k^2-1 and k^2+1 are all fine, where a number m is fine if its prime factors are all less than m^(1/3).at n=37A345896