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A234454 Number of (n+1)X(3+1) 0..5 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant stress 1X1 tilings) 1
21344, 427956, 9249432, 207310120, 4726887280, 108833647220, 2516987045248, 58398272232836, 1356332197407768, 31546244050128332, 733745025666040408, 17081749645650678160, 397559951529941797856, 9259739427069345664228 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A234458

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=1

..5..4..2..3....4..2..5..3....0..1..1..0....5..0..3..0....2..4..5..2

..5..5..2..2....4..1..5..2....1..3..2..0....5..1..5..1....0..3..3..1

CROSSREFS

Sequence in context: A254392 A253980 A250532 * A319017 A286635 A324259

Adjacent sequences:  A234451 A234452 A234453 * A234455 A234456 A234457

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 26 2013

STATUS

approved

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Last modified October 21 22:47 EDT 2019. Contains 328315 sequences. (Running on oeis4.)