1760218domain: NAppears in sequencesNumber of n-covers of an unlabeled 3-set.at n=29A005745Numbers k such that A003415(k) == A276085(k) (mod 2310) and A003415(k+1) == A276085(k+1) (mod 2310), where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.at n=30A391947