68476319domain: NPropertiesPrimalityPrimeyesAppears in sequencesExpansion of (1 + 2*x)/(1 + 3*x + 4*x^2).at n=26A087168Prime subsequence of A077020 (also A001607).at n=16A101088a(n) = 3*a(n-1) - 4*a(n-2) with a(0) = a(1) = 1.at n=26A247560Prime numbersat n=4033694