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%I #3 Jun 18 2012 07:10:31
%S 1220409,109492322533385,22678299640600736258,
%T 181744271406372884215557,251417716503635583550380605,
%U 100056407652480771734417515110
%N Half the number of 8X8 0..n symmetric arrays with no 2X2 subblock summing to 2n
%C Row 7 of A213697
%e Some solutions for n=4
%e ..1..3..0..2..3..4..4..3....3..0..4..4..0..2..3..0....3..4..3..0..0..1..2..3
%e ..3..2..1..3..3..4..3..4....0..4..1..1..2..1..0..0....4..3..4..2..3..0..1..4
%e ..0..1..0..0..3..0..0..0....4..1..1..4..2..4..4..3....3..4..3..3..1..3..0..2
%e ..2..3..0..3..1..0..2..2....4..1..4..3..2..3..0..4....0..2..3..2..1..4..2..3
%e ..3..3..3..1..4..4..3..4....0..2..2..2..2..0..2..1....0..3..1..1..3..1..0..1
%e ..4..4..0..0..4..2..4..1....2..1..4..3..0..4..0..1....1..0..3..4..1..4..2..3
%e ..4..3..0..2..3..4..1..1....3..0..4..0..2..0..2..4....2..1..0..2..0..2..2..3
%e ..3..4..0..2..4..1..1..0....0..0..3..4..1..1..4..0....3..4..2..3..1..3..3..4
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 18 2012
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