28888888domain: NAppears in sequencesNumbers k such that k^2+k+6 is a palindrome.at n=24A027729a(n) is the least positive integer containing n eights that is divisible by n.at n=6A112907Least positive integer whose decimal digits divide the plane into n regions (version for people who write 2 with a curlicue).at n=15A279193