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Number of (n+1) X 9 0..2 arrays with no 2 X 2 subblock determinant equal to any horizontal or vertical neighbor 2 X 2 subblock determinant.
0

%I #7 Apr 26 2021 14:12:44

%S 73494218,110986523654,192072734086538,330651060182605074,

%T 561052248760733641430

%N Number of (n+1) X 9 0..2 arrays with no 2 X 2 subblock determinant equal to any horizontal or vertical neighbor 2 X 2 subblock determinant.

%C Column 8 of A186536.

%e Some solutions for 3 X 9

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

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

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

%Y Cf. A186536.

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 23 2011