User blog comment:Ikosarakt1/Apocalyptic function/@comment-25418284-20130324192805

Generalizing, consider a strictly increasing infinite sequence of positive integers \(a_1, a_2, \ldots\) and a finite sequence of base-\(b\) digits \(d_1d_2d_3\ldotsd_n\). What values of \(a_n\) do not contain \(d\)?