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A234997 Number of (n+1)X(6+1) 0..6 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant stress tilted 1X1 tilings) 1

%I

%S 1214044,12776172,147975544,2489486392,44177186020,914013128196,

%T 19044109453960,424531682715560,9414229379699100,217307773793647632,

%U 4988732357928242872,117937872645602844912,2779027403640520958532

%N Number of (n+1)X(6+1) 0..6 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant stress tilted 1X1 tilings)

%C Column 6 of A234998

%H R. H. Hardin, <a href="/A234997/b234997.txt">Table of n, a(n) for n = 1..15</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 02 2014

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Last modified May 26 17:16 EDT 2022. Contains 354092 sequences. (Running on oeis4.)