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Number of ON states after n generations of cellular automaton based on triangles (compare A161644).
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%I #18 Jan 17 2015 13:29:02

%S 0,3,6,12,24,36,42,54,72,90,108,126,162,198,210,234,264,282,300,324,

%T 366,420,462,498,558,624,678,726,816,906,936,990,1044,1062,1080,1104,

%U 1146,1200,1242,1284,1350,1428,1506,1584,1698,1848,1950,2022,2130

%N Number of ON states after n generations of cellular automaton based on triangles (compare A161644).

%C The same rules as A161644 but here we start with three ON cells which share only one vertex.

%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/Ce#cell">Index entries for sequences related to cellular automata</a>

%Y Cf. A139250, A147562, A151723, A160120, A161644, A182632, A253770.

%K nonn

%O 0,2

%A _Omar E. Pol_, Jan 15 2015