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A232119 Number of (n+1)X(3+1) 0..2 arrays with every element both >= and <= some horizontal or vertical neighbor 1
611, 26029, 1060647, 44229031, 1841606457, 76671235227, 3192300139421, 132915745358065, 5534116036969515, 230420114464294879, 9593840058097695219, 399451969863991106451, 16631700710453882779147, 692482424027733745256629 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A232124

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A072323 A235381 A202373 * A232417 A250997 A022049

Adjacent sequences:  A232116 A232117 A232118 * A232120 A232121 A232122

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 19 2013

STATUS

approved

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Last modified October 2 05:52 EDT 2022. Contains 357191 sequences. (Running on oeis4.)