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Number of (n+1) X (6+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0001 0011 0101 or 1111.
1

%I #6 Jan 15 2017 13:12:00

%S 3816,180370,7802386,348802846,15503669216,690701197282,

%T 30760063948568,1370113260798484,61026150956984294,

%U 2718196509534712330,121072404917335019622,5392745165174671566554,240200883776268055011402

%N Number of (n+1) X (6+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0001 0011 0101 or 1111.

%C Column 6 of A259524.

%H R. H. Hardin, <a href="/A259522/b259522.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A259522/a259522.txt">Empirical recurrence of order 71</a>

%F Empirical recurrence of order 71 (see link above).

%e Some solutions for n=2:

%e ..0..0..0..1..0..0..1....0..0..1..1..0..0..1....0..0..1..0..0..1..0

%e ..1..1..0..1..0..1..0....1..1..0..0..0..0..1....1..0..0..0..0..0..0

%e ..1..1..0..0..1..0..1....0..0..0..0..1..1..0....0..1..1..1..1..1..0

%Y Cf. A259524.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 29 2015