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A280404 Number of 6Xn 0..2 arrays with no element unequal to a strict majority 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, 1666, 31242, 410670, 5338004, 68842232, 874372050, 10989663174, 136908921742, 1690267696260, 20713635101862, 252098542020936, 3050075961754870, 36706018506588918, 439673171758668484, 5244607430822259138 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A280398.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

CROSSREFS

Cf. A280398.

Sequence in context: A234976 A303643 A068744 * A054811 A164773 A321001

Adjacent sequences:  A280401 A280402 A280403 * A280405 A280406 A280407

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 02 2017

STATUS

approved

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Last modified September 17 19:58 EDT 2021. Contains 347489 sequences. (Running on oeis4.)