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A276292 Number of nXn 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-1) and new values introduced in order 0..2. 0
1, 4, 45, 1017, 50949, 4988145, 1073114625, 456837553545, 427500156271073, 794420496019076757, 3247016064162495298253 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A276299.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A276299.

Sequence in context: A107668 A214400 A197989 * A174484 A158887 A126452

Adjacent sequences:  A276289 A276290 A276291 * A276293 A276294 A276295

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 28 2016

STATUS

approved

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Last modified May 19 21:29 EDT 2019. Contains 323410 sequences. (Running on oeis4.)