Search: id:A151776
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%I A151776
%S A151776 0,1,13,25,109,121,205,385,805,817,901,1081,1645,2185,2605,3721,
%T A151776 5749,5857,5941,6121,6685,7225,7789,9289,12565,14401,14821,15937,
%U A151776 18877,23257,25981
%N A151776 Number of ON states after n generations of cellular automaton based on 
               f.c.c. lattice with each cell adjacent to its twelve neighbors.
%C A151776 We take the f.c.c. lattice to consist of the points (X,Y,Z) of Z^3 with 
               X+Y+Z even.
%C A151776 We start with a single ON cell at the origin.
%C A151776 A cell is turned ON if exactly one of its twelve neighbors is ON. An 
               ON cell remains ON for ever.
%C A151776 Analog of A147562, which is corresponding sequence for the square lattice 
               Z^2.
%C A151776 If we just look at what happens in the (X,Y)-plane, we get A147552 and 
               A151836.
%H A151776 <a href="Sindx_Fa.html#fcc">Index entries for sequences related to f.c.c. 
               lattice</a>
%Y A151776 Cf. A151777, A151778, A147562, A151725, A139250, A147562.
%Y A151776 Sequence in context: A163551 A005696 A147145 this_sequence A116524 A053404 
               A122003
%Y A151776 Adjacent sequences: A151773 A151774 A151775 this_sequence A151777 A151778 
               A151779
%K A151776 nonn,more
%O A151776 0,3
%A A151776 N. J. A. Sloane (njas(AT)research.att.com), Jun 24 2009

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