246912domain: NAppears in sequencesPartial sums of repdigits of A002276.at n=5A099669Numbers obtained by adding the first k repdigits that consist of the same digit, for some number k.at n=46A346535a(n) = Sum_{d|n} (n/d)^(d-1) * binomial(d+n/d-1,d).at n=23A360948