190027domain: NPropertiesPrimalityPrimeyesAppears in sequencesList of primes prime(r) such that prime(r)-prime(r-1)=30, prime(r-1)-prime(r-2)=8 and prime(r-2)-prime(r-3)=6.at n=4A299704Number of Grassmannian permutations of size n that avoid a pattern, sigma, where sigma is a pattern of size 7 with exactly one descent.at n=24A362194Prime numbersat n=17171