468883domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = 2*a(n-1) - a(n-2) + a(n-3) + 2^(n-1).at n=17A000253Prime numbers, with a(1)=2, a(n+1) = least prime such that (sum of even digits of a(n)) < (sum of even digits of a(n+1)).at n=16A158084Prime numbersat n=39142