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A241135 Number of nX4 0..2 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..2 introduced in row major order 1
2, 17, 152, 1670, 19619, 238607, 2939027, 36470565, 454209512, 5665536042, 70725144550, 883230404813, 11031990457193, 137807268659287, 1721508492588267, 21505781617159089, 268661629731046770 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A241138

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A295946 A176934 A126037 * A112321 A276198 A178806

Adjacent sequences:  A241132 A241133 A241134 * A241136 A241137 A241138

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 16 2014

STATUS

approved

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Last modified January 23 10:50 EST 2020. Contains 331171 sequences. (Running on oeis4.)