|
%I #6 May 04 2021 16:01:48
%S 5,50,500,3143,18432,98438,508681,2560344,12721832,62688891,307514468,
%T 1504686646,7352965785,35912894408,175383062746,856630710989,
%U 4185293733440,20456112775414,100023287817835,489294036823648
%N Number of n X 4 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.
%C Column 4 of A267667.
%H R. H. Hardin, <a href="/A267663/b267663.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A267663/a267663.txt">Empirical recurrence of order 80</a>
%F Empirical recurrence of order 80 (see link above).
%e Some solutions for n=6
%e ..0..1..0..0....0..0..1..1....0..1..0..0....0..1..0..0....0..0..1..0
%e ..0..1..0..0....1..0..1..0....0..1..1..0....1..0..0..1....1..0..1..1
%e ..0..1..0..0....1..0..1..1....1..0..1..0....1..1..0..0....0..1..1..0
%e ..0..0..1..0....1..1..0..1....0..1..0..0....0..1..0..1....1..0..1..1
%e ..1..1..0..1....0..0..1..1....0..0..1..0....1..1..0..1....1..0..1..0
%e ..0..1..1..0....1..0..0..1....0..1..0..0....0..0..1..1....1..1..0..1
%Y Cf. A267667.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 19 2016
| 