%N Number of toothpicks and D-toothpicks after n-th stage in the D-toothpick "wide" triangle of the third kind.
%C The structure is essentially one of the vertical wedges of several D-toothpick structures. For more information see A220500. First differs from A194440 at a(14). The first differences (A220521) give the number of toothpicks or D-toothpicks added at n-th stage. See A220522 for the "narrow" triangle of the third kind.
%H Omar E. Pol, <a href="http://www.polprimos.com/imagenespub/poltp065.jpg">Illustration of the structure after 32 stages</a>
%H Omar E. Pol, <a href="http://www.polprimos.com/imagenespub/poltp069.jpg">Illustration of the structure after 64 stages</a>
%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. A047999, A139250, A194270, A194440, A194442, A220494, A220521, A220522.
%A _Omar E. Pol_, Dec 15 2012