33867059domain: NPropertiesPrimalityPrimeyesAppears in sequencesG.f. satisfies A(x) = Sum_{n>=1} 2^(n-1) * A(x^(2*n))/A(x^n), with A(0) = 0 and A'(0) = 1.at n=25A378262Prime numbersat n=2081771