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%I #16 Dec 22 2013 00:04:24
%S 0,1,2,2,4,2,4,5,8,2,4,6,12,6,8,11,16,2,4,6,12,14,16,18,24,10,8,14,28,
%T 14,16,23,32,2,4,6,12,14,16,20,32,24,20,22,40,30,40,39,48,18,8
%N Number of toothpicks or D-toothpicks added at n-th stage in the structure of the D-toothpick "narrow" triangle of A233762.
%C Essentially the first differences of A233762.
%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>
%F a(2n) = A220523(2n); a(2n+1) = A220523(2n+1) - 2.
%e Written as an irregular triangle in which the row lengths is A011782 the sequence (starting from 1) begins:
%e 1;
%e 2;
%e 2,4;
%e 2,4,5,8;
%e 2,4,6,12,6,8,11,16;
%e 2,4,6,12,14,16,18,24,10,8,14,28,14,16,23,32;
%e 2,4,6,12,14,16,20,32,24,20,22,40,30,40,39,48,18,8,...
%e Right border gives A000079.
%Y Cf. A000079, A011782, A139251, A220501, A220523, A233761, A233762.
%K nonn,tabf,more
%O 0,3
%A _Omar E. Pol_, Dec 15 2013
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