211097domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of n element 0..3 arrays with each element the minimum of 7 adjacent elements of a random 0..3 array of n+6 elements.at n=15A217953Expansion of Product_{k>=2} (1 + x^k)^k.at n=27A298598Prime numbersat n=18901