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"Corner" sequence associated with A161644 and A161645.
4

%I #9 Feb 24 2021 02:48:19

%S 0,1,3,7,12,17,24,35,46,53,60,73,92,111,130,155,178,189,196,209,228,

%T 249,274,311,356,391,414,445,494,547,598,657,706,725,732,745,764,785,

%U 810,847,892,929,958,999,1064,1141,1218,1307,1404,1471,1502

%N "Corner" sequence associated with A161644 and A161645.

%H David Applegate and N. J. A. Sloane, <a href="/A170883/b170883.txt">Table of n, a(n) for n = 0..1000</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 David Applegate, <a href="/A139250/a139250.anim.html">The movie version of A139250, etc.</a> [See A161644, corner version.]

%Y Cf. A139250, A161644, A161645, A170882.

%K nonn

%O 0,3

%A _David Applegate_ and _N. J. A. Sloane_, Jan 08 2010