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A198603 Number of 2nX14 0..3 arrays with values 0..3 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors 0
122, 125168, 143724590, 173328303620, 212660032469362 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A198604

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

A solution for n=2

..0..0..1..1..2..2..3..3..1..1..1..1..1..1

..0..0..1..1..2..2..3..3..1..2..2..0..0..1

..3..3..2..2..3..3..0..0..1..2..2..0..0..1

..3..3..2..2..3..3..0..0..1..1..1..1..1..1

CROSSREFS

Sequence in context: A282274 A208397 A098129 * A237640 A258489 A015079

Adjacent sequences:  A198600 A198601 A198602 * A198604 A198605 A198606

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 27 2011

STATUS

approved

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Last modified July 10 11:42 EDT 2020. Contains 335576 sequences. (Running on oeis4.)