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%I #4 Apr 11 2013 08:45:39
%S 2185738,26918,21966,26528,31062,34588,37202,39188,51306,73564,103876,
%T 140148,180814,224838,271582,333314,421494,545192,711240,924840,
%U 1190134,1510622,1904402
%N Number of (n+6)X(n+6) 0..1 matrices with each 7X7 subblock idempotent
%C Diagonal of A224588
%e Some solutions for n=2
%e ..1..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0....1..1..0..0..0..0..0..0
%e ..0..0..0..0..0..0..0..0....1..0..1..0..0..0..0..0....0..0..0..0..0..0..0..0
%e ..0..0..0..0..0..0..0..1....1..0..1..0..0..0..0..0....0..0..0..0..0..0..0..0
%e ..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0....0..0..1..1..1..0..0..0
%e ..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0
%e ..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0
%e ..0..0..0..0..0..0..0..1....1..0..1..0..0..0..0..0....0..0..0..0..0..0..0..0
%e ..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0....0..0..1..1..1..0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Apr 11 2013
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