142159domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 10101-11111 pattern in any orientation.at n=13A147422Odd primes p with the property that gcd(ord_p q: prime q divides p-1) = 1.at n=36A295975Prime numbersat n=13199