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 A234242 Number of (n+1)X(2+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant stress 1X1 tilings) 1

%I

%S 6706,99630,1520024,23428586,361889580,5604275160,86776363660,

%T 1346057282610,20871073347970,324182229853644,5033011970696922,

%U 78280166521734740,1216896695697878704,18952578238483018624

%N Number of (n+1)X(2+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant stress 1X1 tilings)

%C Column 2 of A234245

%H R. H. Hardin, <a href="/A234242/b234242.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A234242/a234242.txt">Empirical recurrence of order 45</a>

%F Empirical recurrence of order 45 (see link above)

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 21 2013

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Last modified June 20 16:26 EDT 2019. Contains 324234 sequences. (Running on oeis4.)