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A229390 Number of nX6 0..3 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1)X7 0..1 array.

%I A229390 #6 Jul 23 2025 05:42:45
%S A229390 1912,546752,84210828,11156280332,1451228983308,187243393024012,
%T A229390 24062262212427788,3086056460257853452,395404788283905933324,
%U A229390 50636744827896225333260,6483098981333181772333068
%N A229390 Number of nX6 0..3 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1)X7 0..1 array.
%C A229390 Column 6 of A229392
%H A229390 R. H. Hardin, <a href="/A229390/b229390.txt">Table of n, a(n) for n = 1..116</a>
%F A229390 Empirical: a(n) = 193*a(n-1) -8384*a(n-2) +8320*a(n-3) -24704*a(n-4) +1073152*a(n-5) -1048576*a(n-6) for n>9
%e A229390 Some solutions for n=2
%e A229390 ..1..1..1..1..1..2....1..1..1..2..2..2....1..0..1..2..1..3....1..1..1..1..2..3
%e A229390 ..0..2..3..1..0..2....0..1..1..1..1..1....0..1..1..1..2..3....1..1..0..1..3..3
%K A229390 nonn
%O A229390 1,1
%A A229390 _R. H. Hardin_ Sep 21 2013