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A232123 Number of (n+1)X(7+1) 0..2 arrays with every element both >= and <= some horizontal or vertical neighbor 0
770747, 1601238913, 3192300139421, 6554255427911017, 13402622472944146617, 27414970158908341356731, 56078190177705406992249203, 114709236329077951543847349623, 234640716578681606555674786892257 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A232124

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A122468 A234167 A237573 * A232421 A226113 A151562

Adjacent sequences:  A232120 A232121 A232122 * A232124 A232125 A232126

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 19 2013

STATUS

approved

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Last modified July 3 18:06 EDT 2022. Contains 355055 sequences. (Running on oeis4.)