1416047domain: NPropertiesPrimalityPrimeyesAppears in sequencesTotal sum of the sizes of all blocks with maximal element 10 in all set partitions of {1,2,...,n}.at n=1A270764Total sum of the sizes of all blocks with minimal element 2 in all set partitions of {1,2,...,n}.at n=9A270765Prime numbersat n=108221