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A234160 Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1 1
649450, 193116778, 57647946980, 17566272589090, 5391006112450218, 1661285969383854576, 513096321262694789718, 158690337181889624875158, 49123836190724283158557568, 15216294709692549181512831606 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A234161

LINKS

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

EXAMPLE

Some solutions for n=1

..0..0..0..0..1..1..1..1....0..0..0..1..1..1..1..0....0..0..1..0..1..1..0..1

..0..1..0..1..1..1..0..1....0..0..1..0..1..0..0..1....1..1..0..0..1..0..0..0

CROSSREFS

Sequence in context: A251398 A057847 A058327 * A105002 A162892 A232675

Adjacent sequences:  A234157 A234158 A234159 * A234161 A234162 A234163

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 20 2013

STATUS

approved

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Last modified October 17 17:21 EDT 2021. Contains 348065 sequences. (Running on oeis4.)