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A233229 Number of nX7 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order 1

%I #4 Dec 06 2013 06:11:26

%S 2136,9757236,59679029456,366805442634477,2262465262533395122,

%T 13966565723905519312347,86240738075580821512843673,

%U 532562944711463255634918419168,3288824486303682666484477919564597

%N Number of nX7 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally, 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 Column 7 of A233230

%H R. H. Hardin, <a href="/A233229/b233229.txt">Table of n, a(n) for n = 1..90</a>

%e Some solutions for n=2

%e ..0..0..1..5..1..1..5....0..0..0..1..5..2..2....0..0..0..0..0..1..2

%e ..0..0..2..1..5..1..2....0..0..3..3..1..2..2....0..0..4..4..0..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 06 2013

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Last modified August 28 05:00 EDT 2024. Contains 375477 sequences. (Running on oeis4.)