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%I #4 Aug 08 2014 07:42:36
%S 548,31577,300304,2141609,7972932,26526337,67596992,161991665,
%T 335832580,669329801,1217929488,2155659097,3584230244,5837790449,
%U 9084731392,13912683617,20579766372,30053056825,42704873360,60046213001,82587911428
%N Number of length 7+3 0..n arrays with some pair in every consecutive four terms totalling exactly n
%C Row 7 of A245950
%H R. H. Hardin, <a href="/A245957/b245957.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 2*a(n-1) +5*a(n-2) -12*a(n-3) -9*a(n-4) +30*a(n-5) +5*a(n-6) -40*a(n-7) +5*a(n-8) +30*a(n-9) -9*a(n-10) -12*a(n-11) +5*a(n-12) +2*a(n-13) -a(n-14)
%e Some solutions for n=2
%e ..1....2....2....2....2....1....0....1....1....2....2....0....0....2....1....1
%e ..0....0....1....1....2....1....2....1....2....0....1....2....2....0....2....0
%e ..0....1....2....1....0....0....2....1....0....2....0....1....2....2....0....1
%e ..1....2....0....0....1....2....0....1....1....0....1....1....2....0....2....0
%e ..2....0....0....0....2....0....2....2....0....2....0....1....0....0....1....2
%e ..1....2....2....1....2....0....1....1....2....1....2....0....1....2....2....2
%e ..2....2....0....2....1....2....2....2....0....0....1....1....0....1....0....2
%e ..0....0....2....1....1....0....1....1....2....1....0....0....1....1....2....0
%e ..0....2....1....1....0....1....2....1....2....1....2....2....2....2....0....1
%e ..0....2....2....0....1....2....1....0....1....2....2....2....0....0....2....1
%K nonn
%O 1,1
%A _R. H. Hardin_, Aug 08 2014
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