157753domain: NAppears in sequencesStrong pseudoprimes to base 22.at n=28A020248Strong pseudoprimes to base 80.at n=33A020306Numbers k such that A003285(k) = A003285(k+1) == 1 (mod 2).at n=7A065304Six-digit exclusionary squares: 6-digit numbers whose squares comprise digits none of which appears in the number itself.at n=29A195438