69371domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that 7^k - 6^k is prime.at n=9A062573Number of different ways to select 5 disjoint subsets from {1..n} with equal element sum.at n=9A196232Primes p such that A272207(p) = p.at n=29A276030Prime numbersat n=6885