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A234447 Number of (n+1)X(4+1) 0..4 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant stress 1X1 tilings) 1
58720, 1377422, 34601928, 898985624, 23647980136, 627437990794, 16674841633492, 444755926154674, 11853880524355808, 316752410636964012, 8452634047709216624, 226106339577862820806, 6038837815573273390480 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A234450

LINKS

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

EXAMPLE

Some solutions for n=1

..0..1..0..0..0....1..3..3..2..3....3..0..2..3..2....2..2..2..0..2

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

CROSSREFS

Sequence in context: A031657 A251519 A255781 * A227601 A147700 A214118

Adjacent sequences:  A234444 A234445 A234446 * A234448 A234449 A234450

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 26 2013

STATUS

approved

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Last modified October 16 20:23 EDT 2019. Contains 328103 sequences. (Running on oeis4.)