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A253293 Number of (n+1)X(5+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.

%I A253293 #6 Jul 23 2025 13:55:55
%S A253293 186624,1184928,7431136,61286116,486417836,4028778100,32585471254,
%T A253293 268974784168,2194325404780,18267942030516,149525306842164,
%U A253293 1236309598259424,10153736125504116,84093032702185292,691354236502296106
%N A253293 Number of (n+1)X(5+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.
%C A253293 Column 5 of A253294
%H A253293 R. H. Hardin, <a href="/A253293/b253293.txt">Table of n, a(n) for n = 1..113</a>
%e A253293 Some solutions for n=1
%e A253293 ..0..2..2..2..1..1....0..0..1..1..2..2....0..2..1..1..1..1....0..2..1..0..0..0
%e A253293 ..1..1..1..2..0..1....2..0..0..2..2..0....0..2..1..0..0..1....2..1..0..2..0..0
%K A253293 nonn
%O A253293 1,1
%A A253293 _R. H. Hardin_, Dec 29 2014