%I #5 Aug 11 2014 22:45:53
%S 16,256,3840,56928,841984,12420672,182940432,2693032800,39634170368,
%T 583231191264,8581920953616,126274620899072,1857983333261344,
%U 27337874035216704,402240996868184512,5918440689583411776
%N Number of nX4 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X5 binary array having nonzero determinant
%C Column 4 of A227594
%H R. H. Hardin, <a href="/A227592/b227592.txt">Table of n, a(n) for n = 1..162</a>
%H R. H. Hardin, <a href="/A227592/a227592.txt">Empirical recurrence of order 63</a>
%F Empirical recurrence of order 63 (see link above)
%e Some solutions for n=4
%e ..0..0..1..0....1..1..1..0....1..0..0..0....1..1..0..1....0..1..0..0
%e ..1..1..1..1....1..1..0..1....0..1..0..0....1..1..1..1....0..1..0..1
%e ..1..0..0..1....0..0..0..1....1..1..1..0....0..0..0..0....1..0..0..0
%e ..0..1..0..0....0..1..0..1....0..1..1..1....0..0..0..0....0..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jul 17 2013
|