563473domain: NAppears in sequencesComposite numbers k such that 2^k-2 and 3^k-3 are both divisible by k and k is not a Carmichael number (A002997).at n=18A153513Numbers in A191311 but not in A129521.at n=24A191592Odd non-Carmichael numbers with increasing numbers of bases to which they are pseudoprimes.at n=38A194946