444713domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers in base 10 that are palindromic in bases 7 and 8.at n=20A099145Prime numbers with more than one 1 < k < 10 for which the base-k representation is palindromic.at n=40A255161Number of n-length words on {0,1,2,3,4} avoiding runs of zeros of length 1 (mod 3).at n=9A255632Prime numbersat n=37324