A230685 - OEIS

%I #4 Oct 27 2013 18:00:02

%S 0,0,68,24050,2756394,272728160,25579990362,2350935391670,

%T 214207950466488,19447388042814192,1762844647027428630,

%U 159690564587289765758,14461754182475369666696,1309512672900097786756946

%N Number of nX6 0..6 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 7, and upper left element zero

%C Column 6 of A230686

%H R. H. Hardin, <a href="/A230685/b230685.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,3

%A _R. H. Hardin_, Oct 27 2013