247369domain: NPropertiesPrimalityPrimeyesAppears in sequencesLimit of reversed rows of triangle A126347, in which row sums equal Bell numbers (A000110).at n=31A126348Partition the sequence A073682 into groups so that the sum of each group is prime, then a(n) is the sum of terms in n-th group.at n=5A253664Prime numbersat n=21822