87342domain: NAppears in sequencesa(n) = Sum_{k=1..n} J_4(k)/240.at n=35A115003Numbers k for which A064380(k) = k/2.at n=25A185078Numbers k such that iphi(k) divides k, where iphi is the infinitary Euler phi function (A064380).at n=26A373057Number of distinct lattice points on the Lévy C curve after n iterations.at n=17A390425