331871domain: NPropertiesPrimalityPrimeyesAppears in sequencesWeak Goodstein numbers: a(n) = g_n(n), where g_n(n) is the weak Goodstein function.at n=22A266202Primes of the form p*q+r*s+t*u, where p,q,r,s,t,u are consecutive primes.at n=12A340464Prime numbersat n=28553