A170897 - OEIS

%I #21 Jan 24 2022 07:51:55

%S 0,1,4,4,4,12,4,12,12,12,20,12,20,28,12,12,12,20,28,20,36,36,44,44,36,

%T 52,52,28,28,28,36,44,44,68,68,76,76,60,68,68,68,68,60,36,68,68,84,

%U 100,76,76,92,68,84,92,100,140,100,132,116,100,84,76,108,140,108,100,100,132,92,156,172,124,76,108,108,124,164,140,148,132,116,108,172,156,132,108,140,148,196

%N Number of new cells turned ON at generation n in cellular automaton described in A170896.

%C First differences of A170896. See that entry for much more information.

%H David Applegate, <a href="/A170897/b170897.txt">Table of n, a(n) for n = 0..260</a> (a(145) corrected by Sean A. Irvine)

%H David Applegate, <a href="/A139250/a139250.anim.html">The movie version</a>

%H N. J. A. Sloane, <a href="https://www.youtube.com/watch?v=9ogbsh8KuEM">Exciting Number Sequences</a> (video of talk), Mar 05 2021.

%Y Cf. A170896.

%K nonn

%O 0,3

%A _N. J. A. Sloane_, Jan 09 2010

%E Revised by _David Applegate_ and _N. J. A. Sloane_, Jan 21 2016