225263domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of n-node unlabeled rooted trees with thinning limbs and root outdegree (branching factor) 8.at n=16A244709Primes of the form (k^3 - k^2 - k - 1)/2 for some integer k > 0.at n=15A268063Prime numbersat n=20043