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A234435 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant stress 1X1 tilings) 0
32, 582, 17200, 896112, 72539432, 11533082488, 2561421896376, 1379501791207360, 834355608891492928, 1756003516595468503128 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A234443

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

..1..0..1..2....1..2..2..2....1..0..1..2....2..2..1..1....1..2..2..2

..1..1..1..1....2..2..1..0....0..0..0..2....0..1..1..2....2..2..1..0

..2..1..2..1....2..1..1..1....1..2..1..2....1..1..2..2....2..1..1..1

..2..0..2..2....1..1..0..1....0..2..0..0....0..1..1..2....1..1..2..1

CROSSREFS

Sequence in context: A316874 A317602 A054338 * A010557 A022756 A332262

Adjacent sequences:  A234432 A234433 A234434 * A234436 A234437 A234438

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 26 2013

STATUS

approved

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Last modified April 22 19:11 EDT 2021. Contains 343177 sequences. (Running on oeis4.)