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%I #4 Apr 11 2013 15:12:21
%S 877647,110868,105212,114337,122713,128682,132787,135622,137700,
%T 157201,193783,243309,301667,365687,433384,503411,574992,665573,
%U 792178,967802,1201330,1498385,1862641,2296415,2801260,3396151,4117085,5013150,6142255
%N Number of (n+7)X13 0..1 matrices with each 8X8 subblock idempotent
%C Column 6 of A224597
%H R. H. Hardin, <a href="/A224595/b224595.txt">Table of n, a(n) for n = 1..52</a>
%F Empirical: a(n) = 3*a(n-1) -4*a(n-2) +5*a(n-3) -7*a(n-4) +8*a(n-5) -8*a(n-6) +8*a(n-7) -6*a(n-8) +3*a(n-9) -2*a(n-10) +3*a(n-12) -4*a(n-13) +4*a(n-14) -4*a(n-15) +3*a(n-16) -2*a(n-17) +2*a(n-18) -a(n-19) for n>25
%e Some solutions for n=3
%e ..1..0..0..0..0..0..0..0..0..0..0..0..1
%e ..1..0..0..0..0..0..0..0..0..0..0..0..0
%e ..1..0..0..0..0..0..0..0..0..0..0..0..0
%e ..1..0..0..0..0..0..0..0..0..0..0..0..1
%e ..0..0..0..0..0..0..0..0..0..0..0..0..0
%e ..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..0..1
%e ..1..0..0..0..0..0..0..0..0..0..0..0..1
%e ..0..0..0..0..0..0..0..0..0..0..0..0..1
%e ..1..0..0..0..0..0..0..0..0..0..0..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Apr 11 2013