%I #9 Feb 24 2021 02:48:19
%S 0,1,2,4,8,12,12,12,20,20,16,20
%N Number of toothpick added at n-th stage to the toothpick structure of A182836.
%C First differences of A182836.
%H David Applegate, Omar E. Pol and N. J. A. Sloane, <a href="/A000695/a000695_1.pdf">The Toothpick Sequence and Other Sequences from Cellular Automata</a>, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]
%H N. J. A. Sloane, <a href="/wiki/Catalog_of_Toothpick_and_CA_Sequences_in_OEIS">Catalog of Toothpick and Cellular Automata Sequences in the OEIS</a>
%H <a href="/index/To#toothpick">Index entries for sequences related to toothpick sequences</a>
%Y Cf. A139250, A139251, A152980, A182633, A182635, A182836, A182841.
%K nonn,more
%O 0,3
%A _Omar E. Pol_, Dec 12 2010