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A234889 Number of (n+1)X(7+1) 0..5 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 1, with no adjacent elements equal (constant stress tilted 1X1 tilings) 1
98696, 551048, 2734000, 20512760, 138216800, 1249781316, 9589218960, 97684673000, 792839750040, 8760287132596, 72998710382504, 853176368587936, 7205405503541632, 87498882416514432, 744363442815523768 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A234890

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..49

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A305697 A305698 A052090 * A163679 A106776 A238296

Adjacent sequences:  A234886 A234887 A234888 * A234890 A234891 A234892

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 01 2014

STATUS

approved

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Last modified May 25 05:45 EDT 2022. Contains 354048 sequences. (Running on oeis4.)