125311domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of rooted trees with a forbidden limb of length 3.at n=15A052321Primes of the form 9n^2 - 5.at n=23A201960a(n) is the least positive integer in base n that when multiplied by 2n-1 will contain only the digits 0 and 1.at n=21A337624Prime numbersat n=11762