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A184373 1/3 the number of (n+1)X7 0..2 arrays with every 2X2 subblock having at least two equal elements connected horizontally or vertically 1
420633, 281803871, 185547841629, 122443114867993, 80778452206783159, 53293289955084658949, 35159890626610196979641, 23196517518911246631354055, 15303755709562804997482560737, 10096556166552290137769922123373 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A184376
LINKS
EXAMPLE
Some solutions for 3X7 with a(1,1)=0
..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0
..1..2..2..0..0..0..0....1..1..2..0..0..0..1....1..1..0..0..0..0..1
..1..1..2..0..2..0..0....0..0..2..0..2..0..0....0..1..0..1..0..2..1
CROSSREFS
Sequence in context: A116936 A255081 A206315 * A164729 A164730 A084734
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 12 2011
STATUS
approved

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Last modified July 13 04:46 EDT 2024. Contains 374267 sequences. (Running on oeis4.)