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A233146 Number of nX7 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

%I A233146 #6 Jul 23 2025 07:55:13
%S A233146 2136,20726079,231058112982,2582927810338210,28884899976580380572,
%T A233146 323040050513644831673711,3612824935976380302597462081,
%U A233146 40405307424531049882937388071029,451887251397949341093459133981852269
%N A233146 Number of nX7 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
%C A233146 Column 7 of A233147
%H A233146 R. H. Hardin, <a href="/A233146/b233146.txt">Table of n, a(n) for n = 1..210</a>
%e A233146 Some solutions for n=2
%e A233146 ..0..0..0..1..0..2..4....0..0..0..1..5..2..1....0..0..0..1..2..5..4
%e A233146 ..0..0..0..0..4..0..2....3..0..3..1..1..1..3....3..0..3..5..4..2..5
%K A233146 nonn
%O A233146 1,1
%A A233146 _R. H. Hardin_, Dec 04 2013