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A280178 Number of nX6 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. 1
9, 263, 3931, 43094, 421214, 3755997, 31821879, 258976696, 2046791216, 15814457993, 120011332264, 897444910233, 6629487497213, 48466584078054, 351182574432103, 2524953934109755, 18030795547257916, 127983331651736137 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A280180.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A280180.

Sequence in context: A117796 A117051 A173985 * A189643 A003387 A177393

Adjacent sequences:  A280175 A280176 A280177 * A280179 A280180 A280181

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 28 2016

STATUS

approved

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Last modified July 6 06:13 EDT 2022. Contains 355108 sequences. (Running on oeis4.)