150041domain: NPropertiesPrimalityPrimeyesAppears in sequencesStart with 100016 and repeatedly reverse the digits and add 5 to get the next term.at n=15A119902Numbers that can be written in exactly three different ways as s_1^x_1 + ... + s_t^x_t, with 1 < s_1 < ... < s_t and {s_1,..., s_t} = {x_1,..., x_t} for some t > 0.at n=20A386967Prime numbersat n=13851