64283domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that 1p1, 3p3, 7p7 and 9p9 are all primes.at n=18A059694a(n) = A026905(n) - A014284(n).at n=33A086741Primes q such that p = (r+q+s-1)/2 is a balanced prime, where r, q, s are consecutive primes.at n=21A129190Prime numbersat n=6437