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A230912 Number of nX5 0..7 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 8, and upper left element zero 1

%I

%S 0,2,164,5714,221768,9144134,372256436,15083831290,611930935216,

%T 24834134356510,1007737924024732,40891632273267442,

%U 1659302731260314936,67331404086209327030,2732180126250261658692,110866649653148718923818

%N Number of nX5 0..7 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 8, and upper left element zero

%C Column 5 of A230915

%H R. H. Hardin, <a href="/A230912/b230912.txt">Table of n, a(n) for n = 1..200</a>

%F Empirical: a(n) = 50*a(n-1) -580*a(n-2) +9636*a(n-3) -75225*a(n-4) +427310*a(n-5) -1370674*a(n-6) +496852*a(n-7) +569224*a(n-8) +39600*a(n-9) for n>10

%e Some solutions for n=3

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

%e ..0..3..4..7..6....0..3..6..7..6....0..5..4..3..2....0..7..6..5..2

%e ..4..5..6..5..4....4..5..4..5..4....6..7..0..1..0....6..5..4..3..2

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 01 2013

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Last modified October 22 05:36 EDT 2021. Contains 348160 sequences. (Running on oeis4.)