6946817domain: NPropertiesPrimalityPrimeyesAppears in sequencesMinimal 2^n safe-primes: a(n) = 2^n*A051886(n) + 1 (a prime number).at n=17A051900Duplicate of A051900.at n=17A084706Least prime of the form 1 + p*2^n, where p is an odd prime.at n=16A134854Number of independent vertex sets in the n-Andrásfai graph.at n=17A288038Prime numbersat n=473248