372973domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of unlabeled 3-trees on n vertices.at n=13A078792Primes from twin primes by taking the factorial of each digit and adding them up.at n=15A165934Numbers that are 1 more or less than the sum of the factorials of their digits.at n=3A215849Prime numbersat n=31748