548347domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p of the form p=n^2+3n+9 such that q=p^2+3p+9 is also prime.at n=14A175284Number of dissections of an n-gon into 3- and 5-gons counted up to rotations and reflections.at n=13A290571Prime numbersat n=45190