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A278284 Number of 5Xn 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero. 1
0, 49, 839, 16842, 350649, 7466627, 157609938, 3332353281, 70423579121, 1488690711220, 31465894708605, 665110590387221, 14058553586577416, 297159984661665232, 6281145221048978301, 132766286493553767967 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 5 of A278280.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A278280.

Sequence in context: A175775 A215117 A289992 * A110906 A193940 A012115

Adjacent sequences:  A278281 A278282 A278283 * A278285 A278286 A278287

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 16 2016

STATUS

approved

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Last modified June 20 09:27 EDT 2019. Contains 324234 sequences. (Running on oeis4.)