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%I A262617 #19 Nov 23 2015 10:26:02
%S A262617 0,6,12,6,24,18,12,6,48,42,36,30,24,18,12,6,96,90,84,78,72,66,60,54,
%T A262617 48,42,36,30,24,18,12,6,192,186,180,174,168,162,156,150,144,138,132,
%U A262617 126,120,114,108,102,96,90,84,78,72,66,60,54,48,42,36,30,24,18,12,6,384,378,372,366,360,354,348,342,336,330,324,318
%N A262617 First differences of A256266.
%C A262617 Number of cells turned ON at n-th stage of the cellular automaton of A256266.
%H A262617 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 A262617 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a>
%F A262617 a(n) = 6 * A080079(n), n >= 1.
%e A262617 With the terms written as an irregular triangle in which the row lengths are the terms of A011782 the sequence begins:
%e A262617 0;
%e A262617 6;
%e A262617 12, 6;
%e A262617 24, 18, 12, 6;
%e A262617 48, 42, 36, 30, 24, 18, 12, 6;
%e A262617 96, 90, 84, 78, 72, 66, 60, 54, 48, 42, 36, 30, 24, 18, 12, 6;
%e A262617 ...
%e A262617 Apart from the initial zero the rows list the initial terms of the positive multiples of 6 in decreasing order.
%o A262617 (PARI) a(n) = if(n==0, 0, -6*n+12*2^floor(log(n)/log(2)));
%o A262617 vector(100, n, a(n-1)) \\ _Altug Alkan_, Oct 04 2015
%Y A262617 Cf. A008588, A011782, A080079, A255748, A256257, A256266.
%K A262617 nonn,tabf,easy
%O A262617 0,2
%A A262617 _Omar E. Pol_, Oct 02 2015

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