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Toothpick sequence starting from a T formed by three toothpicks.
4

%I #10 Feb 24 2021 02:48:18

%S 0,3,6,12,20,28,34,46,60,68,76,92,112,130,148,178,204,212,220,236,256,

%T 274,294,328,360,380,408,456,510,560,620,698,748,756,764,780,800,818,

%U 838,872,904,924,952,1000

%N Toothpick sequence starting from a T formed by three toothpicks.

%H Nathaniel Johnston, <a href="/A160732/b160732.txt">Table of n, a(n) for n = 0..274</a>

%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>

%H Nathaniel Johnston, <a href="/A160732/a160732.c.txt">C script for computing table of terms</a>

%Y Cf. A139250, A160732, A160733, A160736, A160738, A160740.

%K nonn

%O 0,2

%A _Omar E. Pol_, May 25 2009

%E Terms after a(9) from _Nathaniel Johnston_, Mar 30 2011