35407domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of n-bead necklaces labeled with numbers -1..1 not allowing reversal, with sum zero and first differences in -1..1.at n=17A208986Primes p such that f(f(p)) is prime where f(x) = Phi_6(x).at n=15A237446a(n) = prime(k+1) with k = n^2 + prime(n)^2.at n=16A243894Prime numbersat n=3771