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Partial sums of A072272.
6

%I #47 Dec 31 2020 11:11:15

%S 1,6,11,28,33,58,75,136,141,166,191,276,293,378,439,656,661,686,711,

%T 796,821,946,1031,1336,1353,1438,1523,1812,1873,2178,2395,3168,3173,

%U 3198,3223,3308,3333,3458,3543,3848,3873,3998,4123,4548,4633,5058,5363,6448,6465,6550,6635,6924,7009,7434,7723,8760,8821,9126,9431,10468

%N Partial sums of A072272.

%C Also, total number of cubic ON cells after n generations in a three-dimensional cellular automaton where A072272(n) gives the number of cubic ON cells in the n-th level of the structure starting from the top. An ON cell remains ON forever. The structure looks like an irregular stepped pyramid.

%H N. J. A. Sloane, <a href="/A253908/b253908.txt">Table of n, a(n) for n = 0..8192</a>

%H N. J. A. Sloane, <a href="http://arxiv.org/abs/1503.01168">On the Number of ON Cells in Cellular Automata</a>, arXiv:1503.01168, 2015

%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. A072272, A116520, A245542, A253767.

%K nonn

%O 0,2

%A _Omar E. Pol_, Jan 27 2015

%E Offset changed to 0 by _N. J. A. Sloane_, Feb 06 2015