%I
%S 1,4,14,48,169,624,2442,10188,45452,217100,1109914,6064584,35330715,
%T 218788432,1435302930,9940062428,72422364227,553338786504,
%U 4420324121772,36820875272488,319053830821880,2869645346679368,26739383194844404,257682847299543248
%N Fourfold convolution of Bell numbers with themselves.
%H Alois P. Heinz, <a href="/A014325/b014325.txt">Table of n, a(n) for n = 0..575</a>
%F G.f.: (1/(1  x  x^2/(1  2*x  2*x^2/(1  3*x  3*x^2/(1  4*x  4*x^2/(1  ...))))))^4, a continued fraction.  _Ilya Gutkovskiy_, Sep 25 2017
%Y Cf. A000110.
%Y Column k=4 of A292870.
%K nonn
%O 0,2
%A _N. J. A. Sloane_.
