218460domain: NAppears in sequencesValues of B (the even leg) of a Pythagorean triangle with A and C both prime and part of a twin prime.at n=10A051858Even legs of Pythagorean triangles whose other leg and hypotenuse are both prime.at n=25A067755Numbers k such that k^7 - 1 and k^7 + 1 are semiprimes.at n=14A279272