99251domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest prime(k) such that the concatenation prime(k)//prime(k+1)//...//prime(k+n-1) represents an emirp.at n=17A173448Number of (w,x,y,z) with all terms in {1,...,n} and w*x<=y*z+2.at n=21A212055Primes of form p*q + 30, where p and q are consecutive primes.at n=25A229570Prime numbersat n=9528