338279domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes equal to the sum of the first k primes for some k.at n=34A013918Magnetic Tower of Hanoi, number of moves of disk number k, optimally solving the [RED ; NEUTRAL ; NEUTRAL] or [NEUTRAL ; NEUTRAL ; BLUE] pre-colored puzzle.at n=13A183115Prime numbersat n=29060