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%I #4 Apr 12 2013 07:48:27
%S 20465,15354,19596,22081,23453,24252,31702,43635,58076,73708,89988,
%T 113491,148896,198454,263524,344683,449230,588930,778104,1032073,
%U 1367122,1806502,2385414,3153261,4175034,5531556,7327326,9701805,12844004
%N Number of (n+4)X6 0..2 matrices with each 5X5 subblock idempotent
%C Column 2 of A224625
%H R. H. Hardin, <a href="/A224619/b224619.txt">Table of n, a(n) for n = 1..64</a>
%F Empirical: a(n) = 2*a(n-1) -a(n-2) +a(n-3) -a(n-4) -a(n-7) +a(n-8) -a(n-9) +a(n-10) +a(n-12) -a(n-13) for n>18
%e Some solutions for n=2
%e ..1..1..1..1..0..0....1..0..0..0..0..2....1..0..0..0..0..0....1..1..2..2..0..1
%e ..0..0..0..0..0..0....1..0..0..0..0..2....1..0..0..0..0..0....0..0..0..0..0..0
%e ..0..0..0..0..0..0....1..0..0..0..0..2....1..0..0..0..0..0....0..0..0..0..0..0
%e ..0..0..0..0..0..0....1..0..0..0..0..1....0..0..0..0..0..0....0..0..0..0..0..0
%e ..0..0..0..0..0..0....0..0..0..0..0..1....0..0..0..0..0..0....0..0..0..0..0..0
%e ..0..1..0..2..1..1....0..0..0..0..0..1....2..0..0..0..0..0....2..1..1..0..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Apr 12 2013
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