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Number of (n+1) X 6 0..3 arrays with equal numbers of 2 X 2 subblocks with sum over 6 and with sum under 6.
0

%I #6 Jan 14 2017 09:36:26

%S 2176856,5856201636,18645030828304,65704518455049396,

%T 240125119409366897752,896829958958890405161724

%N Number of (n+1) X 6 0..3 arrays with equal numbers of 2 X 2 subblocks with sum over 6 and with sum under 6.

%C Column 5 of A183756.

%e Some solutions for 3 X 6:

%e ..0..0..1..3..0..3....0..0..1..2..1..2....0..0..0..3..1..3....0..0..2..2..1..2

%e ..0..0..0..3..2..3....0..0..0..3..3..2....0..0..0..3..3..3....0..0..0..3..2..2

%e ..0..0..0..1..3..3....0..0..0..3..3..2....0..0..1..2..2..2....0..0..0..2..2..3

%e ...

%e ...M..M..P..P..P.......M..M..E..P..P.......M..M..E..P..P.......M..M..P..P..P...

%e ...M..M..M..P..P.......M..M..E..P..P.......M..M..E..P..P.......M..M..M..P..P...

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 06 2011