119827domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes whose base-9 representation also is the base-4 representation of a prime.at n=32A235619a(n) = a(n-1) + a(n-2) + gcd(a(n-1), n), a(1) = a(2) = 1.at n=23A360884Prime numbersat n=11285