VOOZH about

URL: https://oeis.org/A184686

⇱ A184686 - OEIS

login
A184686
T(n,k)=Number of (n+1)X(k+1) binary arrays with every 2X2 subblock singular.
9
10, 28, 28, 76, 128, 76, 208, 544, 544, 208, 568, 2384, 3360, 2384, 568, 1552, 10384, 21968, 21968, 10384, 1552, 4240, 45392, 140816, 221968, 140816, 45392, 4240, 11584, 198352, 909520, 2171152, 2171152, 909520, 198352, 11584, 31648, 867152, 5858896
OFFSET
1,1
COMMENTS
Table starts
....10.......28.........76..........208............568.............1552
....28......128........544.........2384..........10384............45392
....76......544.......3360........21968.........140816...........909520
...208.....2384......21968.......221968........2171152.........21547024
...568....10384.....140816......2171152.......31817360........476660624
..1552....45392.....909520.....21547024......476660624......10876933264
..4240...198352....5858896....212829840.....7079094288.....245133874960
.11584...867152...37779664...2107074576...105530924944....5556396815504
.31648..3791056..243525712..20846869136..1570852959248..125663816659728
.86464.16575056.1569965008.206331811088.23397537190544.2845061488472976
LINKS
EXAMPLE
Some solutions for 4X3
..0..1..1....1..0..0....0..0..1....0..0..0....1..0..0....0..0..1....0..1..1
..0..0..0....0..0..1....1..0..1....1..0..0....0..0..1....1..0..1....0..0..0
..1..0..0....0..0..0....1..0..1....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..0....0..0..1....0..1..1....0..1..0....1..1..0....1..0..1
CROSSREFS
Column 1 is A026150(n+2)=2*A052945(n+1)
Sequence in context: A007705 A196356 A196359 * A251326 A363133 A022422
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 19 2011
STATUS
approved