27641domain: NAppears in sequencesa(n) = T(8,n), array T given by A047858.at n=11A048469Golden semiprimes: a(n)=p*q and abs(p*phi-q)<1, where phi = golden ratio = (1+sqrt(5))/2.at n=15A108540Positions of incrementally largest terms in continued fraction for Copeland-Erdős constant.at n=12A224890