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A253479 Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically 1
3888, 85464, 1962374, 44943722, 1029772234, 23584643086, 540341231986, 12377899231078, 283563887073558, 6496001687360296, 148814367527678450, 3409120312651672240, 78098067867938650674, 1789114238863991229228 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A253482

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A283026 A014891 A253484 * A186135 A223597 A223438

Adjacent sequences:  A253476 A253477 A253478 * A253480 A253481 A253482

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 02 2015

STATUS

approved

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Last modified October 19 23:41 EDT 2019. Contains 328244 sequences. (Running on oeis4.)