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%I #12 Mar 29 2013 12:27:03
%S 0,1,2,4,4,4,4,8,8,4,4,8,8,8,8,16,16,4,4,8,8,8,8,16,16,8,8,16,16,16,
%T 16,32,32,4,4,8,8,8,8,16,16,8,8,16,16,16,16,32,32,8,8,16,16,16,16,32,
%U 32,16,16,32,32,32,32,64,64,4,4,8,8,8,8,16,16
%N Number of toothpicks or D-toothpicks added at n-th stage to the structure of A220494.
%C Essentially the first differences of A220494.
%C First differs from A194441 (and from A220521) at a(12).
%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>
%e When written as an irregular triangle begins:
%e 0;
%e 1;
%e 2;
%e 4,4;
%e 4,4,8,8;
%e 4,4,8,8,8,8,16,16;
%e 4,4,8,8,8,8,16,16,8,8,16,16,16,16,32,32;
%e 4,4,8,8,8,8,16,16,8,8,16,16,16,16,32,32,8,8,16,16,...
%Y Cf. A139250, A139251, A194271, A194701, A194441, A220494, A220497, A220521.
%K nonn,tabf
%O 0,3
%A _Omar E. Pol_, Dec 23 2012
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