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A222848 Number of nX1 0..2 arrays with no more than floor(nX1/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order 5
1, 1, 2, 10, 24, 72, 168, 664, 1632, 5376, 13152, 47968, 119936, 406400, 1017984, 3585408, 9082368, 30987264, 78761472, 272565760, 697493504, 2378450944, 6107523072, 20921604096, 53972262912, 183506403328, 474876108800 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Column 1 of A222853
LINKS
EXAMPLE
All solutions for n=3
..0....0
..1....1
..2....0
CROSSREFS
Sequence in context: A130016 A120550 A233266 * A119062 A270822 A248117
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 07 2013
STATUS
approved

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Last modified May 26 05:37 EDT 2024. Contains 372807 sequences. (Running on oeis4.)