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A208398 Number of 7Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors 1
365, 797162, 1390120992, 2498731184736, 4475009970818208, 8017919094401985204, 14365030966055594634024, 25736775141284073785898360, 46110664957128119185431178656, 82613053824261956541689461407504 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A208392

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A241113 A208321 A208391 * A258485 A073305 A248552

Adjacent sequences:  A208395 A208396 A208397 * A208399 A208400 A208401

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 25 2012

STATUS

approved

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Last modified May 15 23:51 EDT 2022. Contains 353687 sequences. (Running on oeis4.)