228895201domain: NPropertiesPrimalityPrimeyesAppears in sequencesG.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 + x^4 + x^5 + x^6 * A(x/(1 - 2*x)) / (1 - 2*x).at n=22A351345Prime numbersat n=12585118