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

R. H. Hardin, Table of n, a(n) for n = 1..111

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

Adjacent sequences:  A203607 A203608 A203609 * A203611 A203612 A203613

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 03 2012

STATUS

approved

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Last modified November 18 19:59 EST 2019. Contains 329288 sequences. (Running on oeis4.)