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A232199 Number of (n+1)X(3+1) 0..2 arrays with every element both >= and <= some horizontal, vertical or antidiagonal neighbor 1
685, 39651, 2064527, 108997581, 5765893981, 304936615565, 16125727718291, 852771317084487, 45096907001517677, 2384848436844497369, 126117335748613488379, 6669431203519450134085, 352697845770250504989279 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A232204

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A022050 A107514 A116219 * A222751 A234817 A203459

Adjacent sequences:  A232196 A232197 A232198 * A232200 A232201 A232202

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 20 2013

STATUS

approved

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Last modified June 25 16:08 EDT 2022. Contains 354851 sequences. (Running on oeis4.)