10402561domain: NAppears in sequencesNumbers n > 2 such that A258409(n)*A002322(n) divides n-1.at n=19A284671Carmichael numbers k such that phi(k) divides (k-1)*lambda(k).at n=25A306338Carmichael numbers k such that k-1 is a Novak-Carmichael number.at n=20A375322