login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A279869
Number of nX5 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
1
6, 255, 3199, 37289, 389786, 3786373, 35086917, 313383975, 2722202345, 23125021135, 192903953186, 1584994453962, 12857492370098, 103163663735209, 819927701417438, 6462788122534314, 50569048938103665, 393119079521861335
OFFSET
1,1
COMMENTS
Column 5 of A279871.
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..0..0. .0..1..1..1..0. .0..0..1..1..0. .0..0..0..0..0
..0..1..1..0..0. .0..0..0..1..0. .0..1..1..1..0. .1..1..0..0..1
..2..2..1..0..0. .2..2..0..1..0. .0..1..0..0..0. .1..1..1..1..1
..2..2..1..1..0. .2..2..0..0..0. .1..1..0..0..0. .1..1..1..2..2
CROSSREFS
Cf. A279871.
Sequence in context: A041853 A168476 A320979 * A271501 A113900 A053944
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 21 2016
STATUS
approved