-10565domain: ZAppears in sequencesTriangle read by rows: T(n,k) is the coefficient A_k in the transformation Sum_{k=0..n} x^k = Sum_{k=0..n} A_k*(x-2*(-1)^k)^k.at n=15A249267Expansion of g.f.: f'(t)/f(t), where f(t) = Sum_{p prime} t^p.at n=20A307977