78241domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that p, p+18, p+36 are consecutive primes.at n=17A052189Numbers k such that the digits of k^2 are exactly the same (albeit in different order) as the digits of (k+1)^2.at n=23A072841Prime numbers p such that p^2 and (p+1)^2 are anagrams.at n=4A175519Prime numbersat n=7684