|
| |
|
|
A189198
|
|
Number of 5Xn binary arrays without the pattern 0 0 1 vertically or antidiagonally
|
|
1
|
|
|
|
20, 400, 6446, 101628, 1579664, 24496092, 379515360, 5878642448, 91053926856, 1410308064720, 21843768123936, 338330131913680, 5240270191277760, 81164599671831296, 1257128330483644640, 19471193573584406720
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
Row 5 of A189196
|
|
|
LINKS
|
R. H. Hardin, Table of n, a(n) for n = 1..200
|
|
|
FORMULA
|
Empirical: a(n) = 20*a(n-1) -60*a(n-2) -208*a(n-3) +844*a(n-4) +344*a(n-5) -3476*a(n-6) +3544*a(n-7) -1056*a(n-8)
|
|
|
EXAMPLE
|
Some solutions for 5X3
..1..1..0....1..1..0....0..1..1....0..1..1....1..0..1....0..0..1....1..0..1
..0..1..1....1..1..1....0..0..1....0..1..1....1..1..0....0..1..0....0..1..1
..1..1..1....0..1..0....0..1..1....0..0..0....0..1..1....0..1..1....1..1..1
..1..1..0....1..1..1....0..0..0....0..0..1....1..1..1....0..1..0....1..0..1
..0..1..1....0..0..0....0..1..0....0..0..0....0..0..0....0..0..1....0..1..0
|
|
|
CROSSREFS
|
Sequence in context: A083276 A057745 A224386 * A224019 A171294 A267793
Adjacent sequences: A189195 A189196 A189197 * A189199 A189200 A189201
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
R. H. Hardin Apr 18 2011
|
|
|
STATUS
|
approved
|
| |
|
|
