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A227592 Number of nX4 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X5 binary array having nonzero determinant 1

%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

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Last modified April 19 17:39 EDT 2024. Contains 371797 sequences. (Running on oeis4.)