%I #6 Nov 17 2017 17:20:25
%S 1,2,8,35,169,862,4575,24999,139700,794684,4586377,26788423,158054285,
%T 940603900
%N Number of directed animals on a certain lattice.
%H S. Ramanujan, <a href="http://www.imsc.res.in/~rao/ramanujan/NoteBooks/NoteBook2/chapterIII/page6.htm">Notebook entry</a>
%Y Cf. A259757.
%K nonn
%O 0,2
%A Alain Denise (Alain.Denise(AT)lri.fr)