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A209092 T(n,k)=Number of nXk 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically 7
4, 16, 16, 61, 256, 61, 232, 3721, 3721, 232, 883, 53824, 196916, 53824, 883, 3361, 779689, 10347649, 10347649, 779689, 3361, 12793, 11296321, 544875737, 1971161340, 544875737, 11296321, 12793, 48694, 163660849, 28698007940 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.....4.........16.............61.................232.....................883
....16........256...........3721...............53824..................779689
....61.......3721.........196916............10347649...............544875737
...232......53824.......10347649..........1971161340............376488811859
...883.....779689......544875737........376488811859.........260988770962672
..3361...11296321....28698007940......71929610916133......180986678798076799
.12793..163660849..1511450744648...13741947409424169...125502610636793867958
.48694.2371105636.79603803814415.2625341010784019740.87027185693521847800021
LINKS
EXAMPLE
Some solutions for n=4 k=3
..2..2..1....2..0..3....0..1..1....0..3..3....1..0..2....0..1..1....2..1..2
..0..0..3....0..2..0....3..3..0....0..1..3....3..2..1....3..2..2....3..0..1
..0..0..1....3..1..1....3..1..2....2..1..1....1..0..3....1..2..2....2..0..0
..1..1..3....2..0..2....3..2..1....2..1..1....3..0..1....1..3..2....1..3..0
CROSSREFS
Column 1 is A206790
Column 2 is A206791
Sequence in context: A207057 A206797 A206967 * A207134 A206838 A206900
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 05 2012
STATUS
approved

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Last modified April 18 21:46 EDT 2024. Contains 371781 sequences. (Running on oeis4.)