Values of n for which there are no empty intervals when fractional_part(i E) for i = 1, ..., n is plotted along [ 0, 1 ] subdivided into n equal regions.

The sequence is infinite since it contains all denominators of continued fraction convergents of E. The next denominator is 190435, but it has yet to be proved that there are no other terms before it. - Ivan Neretin, Jan 23 2018

a(17) = 190435 verified as the next term. - Sean A. Irvine, Oct 31 2020