Editing Wedderburn–Etherington number (section)

==Growth rate==
The Wedderburn–Etherington numbers grow [[asymptotic analysis|asymptotically]] as
:<math>a_n \approx \sqrt{\frac{\rho+\rho^2B'(\rho^2)}{2\pi}} \frac{\rho^{-n}}{n^{3/2}},</math>
where ''B'' is the [[generating function]] of the numbers and ''ρ'' is its [[radius of convergence]], approximately 0.4027 {{OEIS|A240943}}, and where the constant given by the part of the expression in the square root is approximately 0.3188 {{OEIS|A245651}}.<ref>{{citation
 | last = Landau | first = B. V.
 | issue = 2
 | journal = [[Mathematika]]
 | mr = 0498168
 | pages = 262–265
 | title = An asymptotic expansion for the Wedderburn-Etherington sequence
 | volume = 24
 | year = 1977
 | doi=10.1112/s0025579300009177}}.</ref>