10075699domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = 1, a(1) = 4, a(2) = 9, a(3) = 16.at n=29A295720Prime numbersat n=669307