%I #11 Feb 24 2021 02:48:18
%S 1,1,2,4,4,2,4,6,4,4,8,12,10,6,10,10,4,4,8,12,10,8,14,16,12,16,28,34,
%T 26,20,26,18,4,4,8,12,10,8,14,16,12,16,28,34,26,22,30,24,12,16,28,34,
%U 28,30,44,44
%N First differences of A160162.
%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) = A160159(n)/2.
%Y Cf. A139250, A139251, A160158, A160159, A160162.
%K nonn
%O 1,3
%A _Omar E. Pol_, May 29 2009
%E More terms from _Colin Barker_, Apr 19 2015
|