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A203610
T(n,k)=Number of nXk 0,1 arrays with adjacent row and column sums unequal
7
2, 2, 2, 2, 8, 2, 2, 20, 20, 2, 2, 44, 126, 44, 2, 2, 116, 728, 728, 116, 2, 2, 332, 4374, 10016, 4374, 332, 2, 2, 900, 25788, 129656, 129656, 25788, 900, 2, 2, 2268, 149794, 1649668, 3648810, 1649668, 149794, 2268, 2, 2, 5716, 866692, 20742920, 98676048
OFFSET
1,1
COMMENTS
Table starts
.2.....2........2...........2..............2...............2................2
.2.....8.......20..........44............116.............332..............900
.2....20......126.........728...........4374...........25788...........149794
.2....44......728.......10016.........129656.........1649668.........20742920
.2...116.....4374......129656........3648810........98676048.......2608783126
.2...332....25788.....1649668.......98676048......5616280768.....310153746516
.2...900...149794....20742920.....2608783126....310153746516...35610018145138
.2..2268...866692...256903112....67877862300..16801526882832.3993667091848452
.2..5716..4989242..3151779352..1746486947416.897690327775816
.2.14892.28600208.38451720324.44565435574244
LINKS
EXAMPLE
Some solutions for 4X4
..0..0..0..1....1..0..0..0....1..1..1..0....0..1..1..0....0..0..1..1
..0..0..1..1....0..1..1..0....1..0..1..0....1..1..0..1....0..0..0..1
..0..1..0..0....1..0..1..1....0..0..0..1....1..0..0..0....0..0..0..0
..0..1..0..1....1..1..1..1....1..0..1..0....1..0..0..1....1..0..0..0
CROSSREFS
Diagonal is A202648
Sequence in context: A087577 A323741 A168281 * A294873 A058788 A013598
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 03 2012
STATUS
approved