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A281330 Number of 5Xn 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. 1
0, 2976, 521848, 37854870, 2628860468, 166805996158, 10160537599967, 600433381268898, 34723542072723416, 1975325863716030310, 110929557975063540816, 6165067026942753179636, 339710976507404522326590 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 5 of A281326.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..40

EXAMPLE

Some solutions for n=2

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

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

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

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

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

CROSSREFS

Cf. A281326.

Sequence in context: A124595 A186549 A236140 * A289455 A202775 A235744

Adjacent sequences: A281327 A281328 A281329 * A281331 A281332 A281333

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 20 2017

STATUS

approved

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Last modified December 2 20:59 EST 2022. Contains 358510 sequences. (Running on oeis4.)