3487807767domain: NAppears in sequencesG.f. A(x) = Sum_{n>=0} a(n)*x^n where a(n) = Sum_{k=0..n} ( [x^k] A(2*x)^(n+1) (mod 2^(n+1)) ) for n >= 0 with a(0) = 1.at n=28A371715