1722688domain: NAppears in sequencesExpansion of e.g.f. arctan(log(x+1) - tan(x)).at n=11A013237Expansion of e.g.f. tanh(log(x+1) - tan(x)).at n=11A013241G.f.: Sum_{n>=1} moebius(n)*x^n/(1 - Lucas(n)*x^n + (-1)^n*x^(2*n)), where Lucas(n) = A000204(n).at n=32A204291