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%I #4 Jan 07 2017 08:06:45
%S 224,61880,16438612,4460317695,1208240638772,327452072560351,
%T 88741877287328326,24049810737844448684,6517703746847251930646,
%U 1766353341829714295007100,478696830022637290656991583
%N Number of nX7 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
%C Column 7 of A280673.
%H R. H. Hardin, <a href="/A280672/b280672.txt">Table of n, a(n) for n = 1..27</a>
%e Some solutions for n=2
%e ..0..0..1..1..0..0..1. .0..1..0..1..0..1..2. .0..1..0..1..0..2..2
%e ..2..2..0..2..2..1..2. .2..2..1..2..1..2..1. .1..2..1..2..0..0..2
%Y Cf. A280673.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 07 2017
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