1218944domain: NAppears in sequencesNumbers k such that both k and k+1 are infinitary abundant numbers (A129656).at n=27A327635Numbers k such that k and k+1 are both nonexponential abundant numbers.at n=9A348606Length of the n-th Golomb ruler constructed by the Paul Erdős and Pál Turán formula.at n=26A380790