13696033domain: NAppears in sequencesCarmichael numbers C such that C-1 is not a Niven/Harshad number.at n=27A097061Carmichael numbers divisible by 17 and 29.at n=2A182381Carmichael numbers k such that the odd part of k-1 is squarefree.at n=17A263403Carmichael numbers ending in 3.at n=9A355309