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A169708 First differences of A169707.

%I A169708 #23 Jan 21 2016 17:43:49
%S A169708 1,4,4,12,4,12,20,28,4,12,20,28,20,44,68,60,4,12,20,28,20,44,68,60,20,
%T A169708 44,68,76,84,156,196,124,4,12,20,28,20,44,68,60,20,44,68,76,84,156,
%U A169708 196,124,20,44,68,76,84,156,196,140,84,156,212,236,324,508,516,252,4,12,20,28,20
%N A169708 First differences of A169707.
%H A169708 David Applegate, <a href="/A139250/a139250.anim.html">The movie version</a>
%H A169708 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 A169708 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a>
%F A169708 It appears that a(n) = 4*A160552(n), n >= 1. - _Omar E. Pol_, Feb 13 2015
%e A169708 From _Omar E. Pol_, Feb 13 2015: (Start)
%e A169708 Written as an irregular triangle in which row lengths are 1,1,2,4,8,16,32,... the sequence begins:
%e A169708 1;
%e A169708 4;
%e A169708 4,12;
%e A169708 4,12,20,28;
%e A169708 4,12,20,28,20,44,68,60;
%e A169708 4,12,20,28,20,44,68,60,20,44,68,76,84,156,196,124;
%e A169708 4,12,20,28,20,44,68,60,20,44,68,76,84,156,196,124,20,44,68,76,84,156,196,140,84,156,212,236,324,508,516,252;
%e A169708 It appears that the row sums give A000302.
%e A169708 It appears that the right border gives A173033.
%e A169708 (End)
%Y A169708 Cf. A000302, A011782, A139251, A151548, A152980, A153006, A160164, A160552, A169707 (partial sums), A170903, A173033, A253088.
%K A169708 nonn,tabf
%O A169708 0,2
%A A169708 _N. J. A. Sloane_, Apr 17 2010
%E A169708 Initial 1 added by _Omar E. Pol_, Feb 13 2015