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a(n) = 2*A194695(n).
4

%I #15 Sep 26 2015 01:17:13

%S 4,4,8,12,16,16,22,32,26,20,24,40,44,52,48,72,42,20,24

%N a(n) = 2*A194695(n).

%C Conjecture: number of toothpicks or D-toothpicks added to the structure of A194442 at stage 2^k+n, if k tends to infinity. It appears that rows of A194443 when written as a triangle converge to this sequence.

%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 Written as a triangle:

%e 4,

%e 4,

%e 8,

%e 12,16,

%e 16,22,32,26,

%e 20,24,40,44,52,48,72,42,

%e 20,24

%Y Cf. A152980, A194270, A194442, A194694, A194695, A194696

%K nonn,more

%O 1,1

%A _Omar E. Pol_, Sep 03 2011