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 A234704 Number of (n+1)X(n+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 6 (constant stress 1X1 tilings) 0
 322, 7154, 87698, 1108418, 9883666, 104373122, 850224914, 8324205794 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A234712 LINKS EXAMPLE Some solutions for n=3 ..6..2..2..2....2..5..4..5....0..5..0..6....3..6..2..3....4..3..5..1 ..4..6..0..6....4..1..6..1....6..5..6..6....7..4..6..1....2..7..3..5 ..7..3..3..3....2..5..4..5....1..6..1..7....4..7..3..4....6..5..7..3 ..4..6..0..6....3..0..5..0....1..0..1..1....6..3..5..0....1..6..2..4 CROSSREFS Sequence in context: A234712 A234705 A324629 * A266885 A253368 A033524 Adjacent sequences:  A234701 A234702 A234703 * A234705 A234706 A234707 KEYWORD nonn AUTHOR R. H. Hardin, Dec 29 2013 STATUS approved

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Last modified August 25 04:05 EDT 2019. Contains 326318 sequences. (Running on oeis4.)