8834629domain: NPropertiesPrimalityPrimeyesAppears in sequencesFibonacci sequence beginning 1, 10.at n=30A022100a(n) = 3*a(n-1) - a(n-2) with a(0)=1, a(1)=11.at n=15A056123Sums of NE-SW diagonals of triangle A172171.at n=31A172173Prime numbersat n=592151