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%I #10 Feb 24 2021 02:48:18
%S 1,12,12,84,12,84,180,420,12,84,180,564,540,420,1116,2028,108,84,180,
%T 564,540,564,1500,3276,1836,420,1116,2940,4380,2724,6252,10212,1284,
%U 372,420,612,540,564,1500,3276
%N First differences of A151776.
%H David Applegate, Omar E. Pol and N. J. A. Sloane, <a href="/A000695/a000695_1.pdf">The Toothpick Sequence and Other Sequences from Cellular Automata</a>, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]
%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>
%Y Cf. A151776, A151778.
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Jun 24 2009
%E Terms after a(30) from _Nathaniel Johnston_, Mar 27 2011
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