98141domain: NAppears in sequencesPartial sums of A001158: Sum_{j=1..n} sigma_3(j).at n=23A064603a(1) = 2; a(n+1) = a(n) + p, where p is the largest prime <= a(n).at n=16A123196Numbers whose base-b expansions, for both b=3 and b=4, include no digits other than 1 and b-1.at n=29A262958