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A274894 Number of nX7 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-1) or (-2,0) and new values introduced in order 0..2. 1
32, 972, 465, 2291, 10337, 49697, 237807, 1143185, 5539989, 26833885, 130079497, 632358111, 3069896886, 14919608999, 72537188422, 352492355625, 1713947371548, 8332597817985, 40508772974972, 196969575853783, 957632906229433 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A274895.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A274895.

Sequence in context: A299357 A299178 A299940 * A275136 A276298 A282313

Adjacent sequences:  A274891 A274892 A274893 * A274895 A274896 A274897

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 10 2016

STATUS

approved

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Last modified July 25 12:10 EDT 2021. Contains 346289 sequences. (Running on oeis4.)