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A183782
T(n,k)=Half the number of (n+1)X(k+1) binary arrays with no 2X2 subblock having exactly 2 ones
10
5, 13, 13, 33, 47, 33, 85, 161, 161, 85, 217, 567, 730, 567, 217, 557, 1969, 3435, 3435, 1969, 557, 1425, 6887, 15887, 21935, 15887, 6887, 1425, 3653, 24001, 74148, 136843, 136843, 74148, 24001, 3653, 9353, 83799, 344483, 864671, 1146964, 864671, 344483
OFFSET
1,1
COMMENTS
Table starts
.....5......13.......33.........85.........217...........557...........1425
....13......47......161........567........1969..........6887..........24001
....33.....161......730.......3435.......15887.........74148.........344483
....85.....567.....3435......21935......136843........864671........5431499
...217....1969....15887.....136843.....1146964.......9764363.......82573675
...557....6887....74148.....864671.....9764363.....112439612.....1284649009
..1425...24001...344483....5431499....82573675....1284649009....19815396763
..3653...83799..1604473...34228999...701022093...14750484447...307446383061
..9353..292305..7462786..215374371..5941108591..169027656900..4760294305144
.23965.1020103.34738575.1356329167.50402814448.1939448495087.73819487702999
LINKS
EXAMPLE
Some solutions with a(1,1)=0 for 4X3
..0..0..1....0..0..1....0..0..0....0..0..0....0..0..1....0..0..1....0..1..1
..1..0..0....0..0..0....0..1..0....0..0..0....0..1..1....0..0..0....1..1..1
..0..0..1....1..0..1....1..1..1....1..0..1....1..1..0....0..0..0....0..1..1
..0..0..0....0..0..0....1..1..1....1..1..1....1..0..0....0..1..0....0..0..1
CROSSREFS
Sequence in context: A151994 A321992 A231806 * A341751 A244435 A134202
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved