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A234243 Number of (n+1)X(3+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant stress 1X1 tilings) 1
72616, 1520024, 32965378, 725628904, 16021165696, 354931091338, 7860119921126, 174432581257432, 3867909998650764, 85938055271287920, 1907697414837426570, 42433568115687443458, 942986024965772638510, 20999313840564845514606 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A234245

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..130

EXAMPLE

Some solutions for n=1

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

..0..0..0..2....1..1..0..1....6..6..3..6....2..6..1..0....2..4..1..2

CROSSREFS

Sequence in context: A093212 A114258 A238151 * A260053 A237555 A186047

Adjacent sequences:  A234240 A234241 A234242 * A234244 A234245 A234246

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 21 2013

STATUS

approved

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Last modified May 21 08:53 EDT 2019. Contains 323441 sequences. (Running on oeis4.)