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A208007 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 1 1 and 1 1 0 vertically 6
2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 14, 81, 92, 81, 14, 22, 196, 221, 221, 196, 22, 35, 484, 618, 536, 618, 484, 35, 56, 1225, 1690, 1711, 1711, 1690, 1225, 56, 90, 3136, 4861, 4993, 7016, 4993, 4861, 3136, 90, 145, 8100, 13900, 16742, 24512, 24512, 16742, 13900 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
..2....4.....6.....9.....14......22.......35........56........90........145
..4...16....36....81....196.....484.....1225......3136......8100......21025
..6...36....92...221....618....1690.....4861.....13900.....40452.....117717
..9...81...221...536...1711....4993....16742.....53411....182247.....608142
.14..196...618..1711...7016...24512...106503....411848...1787438....7238503
.22..484..1690..4993..24512...90232...486443...2001968..10846870...47911153
.35.1225..4861.16742.106503..486443..3569728..18874239.139219755..803098636
.56.3136.13900.53411.411848.2001968.18874239.101519408.989521860.5706548155
LINKS
EXAMPLE
Some solutions for n=4 k=3
..0..1..0....0..0..0....0..1..0....1..0..1....1..0..1....0..0..0....0..1..0
..0..0..0....0..1..1....1..1..0....0..0..0....0..0..0....0..1..1....0..1..0
..0..1..1....0..0..0....0..1..0....1..1..1....0..1..1....0..0..0....0..1..1
..0..0..0....0..1..0....1..1..1....0..0..0....0..0..0....1..0..1....1..1..0
CROSSREFS
Column 1 is A001611(n+2)
Column 2 is A207436
Column 3 is A207559
Sequence in context: A207960 A207564 A207419 * A207123 A207442 A209224
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 22 2012
STATUS
approved

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Last modified July 15 06:58 EDT 2024. Contains 374324 sequences. (Running on oeis4.)