%I #10 Feb 24 2021 02:48:18
%S 0,1,1,0,1,5,4,0,1,3,2,1,7,18,12,0,1,3,2,1,7,14,8,1,5,8,5,9,32,64,24,
%T 0,1,3,2,1,7,14,8,1,5,8,5,9,32,48,24,1,5
%N First differences of A159789.
%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>
%F a(n) = A159796(n+1)/4.
%Y Cf. A139250, A153000, A159786, A159789, A159796.
%K more,nonn
%O 1,6
%A _Omar E. Pol_, Jun 13 2009
%E More terms from _Colin Barker_, Apr 19 2015