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A186530 Number of (n+1)X4 0..2 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant 1

%I #5 Mar 31 2012 12:36:05

%S 4020,129762,4456218,150041994,5043895240,169733268904,5709526227226,

%T 192072734086538,6461422817794236,217365472732705214,

%U 7312282796005760846,245988850418456533510,8275187693250816388800,278381446241871054077996

%N Number of (n+1)X4 0..2 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant

%C Column 3 of A186536

%H R. H. Hardin, <a href="/A186530/b186530.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3X4

%e ..1..0..2..1....1..1..1..0....1..1..2..1....0..1..0..1....0..1..2..0

%e ..0..2..2..2....1..1..2..2....1..0..2..0....2..1..2..0....0..1..1..2

%e ..2..0..2..0....0..1..0..0....1..1..1..2....2..1..1..2....1..0..1..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 23 2011

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Last modified February 23 17:29 EST 2024. Contains 370283 sequences. (Running on oeis4.)