131927domain: NPropertiesPrimalityPrimeyesAppears in sequencesTriangle T(n,k) of number of strongly connected digraphs on n unlabeled nodes and with k arcs, k=0..n*(n-1).at n=59A057276Primes p such that the differences between the 5 consecutive primes starting with p are (6,6,2,6).at n=18A078965Prime numbersat n=12321