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A235255 Number of (n+1)X(5+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant stress tilted 1X1 tilings) 1

%I

%S 39680,102000,251656,717452,1951752,5990204,17480904,56590772,

%T 174061880,586251132,1878570184,6520782212,21592361736,76732245020,

%U 260994094488,945046085492,3286749223400,12084946706892,42822271489672

%N Number of (n+1)X(5+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant stress tilted 1X1 tilings)

%C Column 5 of A235258

%H R. H. Hardin, <a href="/A235255/b235255.txt">Table of n, a(n) for n = 1..88</a>

%H R. H. Hardin, <a href="/A235255/a235255.txt">Empirical recurrence of order 58</a>

%F Empirical recurrence of order 58 (see link above)

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 05 2014

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Last modified July 25 03:53 EDT 2021. Contains 346283 sequences. (Running on oeis4.)