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A223117 Number of 4Xn 0..2 arrays with exactly floor(4Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
0, 184, 6676, 244607, 9329085, 361530918, 14237206760, 566959827679, 22771337178098, 920732664014184, 37428247719900736, 1528116180858713458, 62615475463419517018, 2573537658832757981728, 106050487362790924033404 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 4 of A223114
LINKS
EXAMPLE
Some solutions for n=3
..0..1..1....0..1..0....0..1..2....0..1..0....0..1..2....0..1..0....0..0..1
..2..1..2....0..1..0....1..1..0....0..2..1....1..2..0....1..1..2....1..0..1
..2..0..2....1..1..1....0..1..0....0..0..1....1..0..1....0..0..2....1..2..2
..1..0..0....1..1..2....2..1..1....2..0..1....1..2..1....1..0..1....2..0..1
CROSSREFS
Sequence in context: A121733 A235250 A221931 * A221782 A296780 A035831
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 14 2013
STATUS
approved

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Last modified March 29 09:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)