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A222830 Number of nX3 0..3 arrays with exactly floor(nX3/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order 1
0, 32, 2120, 114782, 5459252, 346343088, 17812721025, 1142470649401, 58980648163832, 3852418637358246, 200706673436292108, 13243427433214319023, 693625799476691177636, 46113394821687632448294, 2425015336246882407219638 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 3 of A222832
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1....0..1..0....0..1..0....0..1..2....0..1..2....0..1..2....0..1..2
..2..1..0....2..1..0....2..1..1....0..1..0....0..0..3....2..1..2....3..0..2
..3..3..2....1..3..2....1..2..1....2..3..2....2..0..2....1..2..1....2..3..3
CROSSREFS
Sequence in context: A268054 A268077 A202547 * A079202 A294607 A294953
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 06 2013
STATUS
approved

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Last modified July 21 23:34 EDT 2024. Contains 374478 sequences. (Running on oeis4.)