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A234670 Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings). 1
229272, 1648188, 11826092, 85076140, 612823800, 4421960468, 31951474920, 231249678820, 1675919782860, 12165195549188, 88420148767440, 643663869538676, 4691581089095824, 34248260363836644, 250321059877067092 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..36

EXAMPLE

Some solutions for n=1:

0 0 6 1 1 4 0 4 7 7 0 2 0 1 7 0 4 5 6 7

0 4 6 5 1 5 5 5 4 0 5 3 5 2 4 6 6 3 0 5

CROSSREFS

Column 4 of A234672.

Sequence in context: A139411 A351054 A212727 * A324636 A015319 A270515

Adjacent sequences: A234667 A234668 A234669 * A234671 A234672 A234673

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 29 2013

STATUS

approved

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Last modified February 8 23:03 EST 2023. Contains 360153 sequences. (Running on oeis4.)