101597domain: NAppears in sequencesa(n) = M(2^n), where M(n) is Mertens's function, A002321.at n=40A084236Total binary weight (cf. A000120) of all A005251(n) binary sequences of length n not containing any isolated 1's.at n=17A259966Positions of records in A030000.at n=34A372045