94556domain: NAppears in sequencesexp(tanh(x)*arcsinh(x))=1+2/2!*x^2-50/6!*x^6+1400/8!*x^8-35222/10!*x^10...at n=6A012694Maximum of A073830(k) for k between A001359(n) and A001359(n+1).at n=18A073831Number of well-nested drawings of a rooted tree.at n=7A113882Principal diagonal of the convolution array A213548.at n=20A213549