84491domain: NAppears in sequencesOdd k for which abs(2^m - k) is nonprime for all m < k.at n=25A263865Squarefree terms of A129802 whose prime factors are neither elite (A102742) nor anti-elite (A128852), where A129802 is the possible bases for Pepin's primality test for Fermat numbers.at n=17A372895