A207885 - OEIS

A207885

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 1 0 vertically

2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 13, 81, 82, 81, 14, 19, 169, 221, 177, 196, 22, 28, 361, 493, 575, 408, 484, 35, 41, 784, 1095, 1360, 1673, 942, 1225, 56, 60, 1681, 2654, 3106, 4387, 4881, 2233, 3136, 90, 88, 3600, 6203, 8652, 10207, 14225, 14825, 5348, 8100, 145, 129

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Table starts

..2....4....6.....9.....13.....19......28.......41.......60........88.......129

..4...16...36....81....169....361.....784.....1681.....3600......7744.....16641

..6...36...82...221....493...1095....2654.....6203....14182.....33242.....77781

..9...81..177...575...1360...3106....8652....22114....53620....139806....360132

.14..196..408..1673...4387..10207...33976....97989...250976....751786...2196861

.22..484..942..4881..14225..33631..138552...452415..1213630...4316538..14467167

.35.1225.2233.14825..49586.119278..618202..2332602..6535778..28238814.110355600

.56.3136.5348.45411.175747.430317.2857532.12501427.36429646.195734448.894867543

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..578

EXAMPLE

Some solutions for n=4 k=3

..1..1..1....0..1..0....0..1..1....0..0..1....0..1..0....0..0..1....1..0..0

..1..1..1....1..0..0....1..1..0....0..1..1....1..1..1....1..1..0....0..0..1

..1..1..1....0..1..1....0..1..1....0..0..1....0..1..0....0..0..1....1..1..0

..1..1..1....1..0..0....1..1..0....1..1..1....0..1..0....1..0..0....0..0..1

CROSSREFS

Column 1 is A001611(n+2)

Column 2 is A207436

Column 3 is A207483

Row 1 is A000930(n+3)

Row 2 is A207170

Row 3 is A207763

Sequence in context: A207682 A207488 A207269 * A207762 A207368 A208013

Adjacent sequences: A207882 A207883 A207884 * A207886 A207887 A207888

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 21 2012

STATUS

approved