3646693domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,1,1 for x=0,1,2,3,4.at n=10A197359Primes p such that (p^2 + 5)/6, (p^4 + 5)/6, and (p^8 + 5)/6 are prime.at n=28A253940Prime numbersat n=259862