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A204196 Number of nX7 0..1 arrays with no occurrence of three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..1 introduced in row major order 1
21, 882, 1724, 9940, 67169, 461894, 3162172, 21906411, 152100304, 1053377463, 7321279936, 50893161901, 353396805989, 2456759583794, 17078402117279, 118676436051497, 824965798194515, 5734649466128312, 39857755473341719 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A204197
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..0..1..1....0..0..1..1..0..1..1....0..0..1..1..0..0..1
..0..1..0..1..1..0..0....1..1..0..0..1..1..0....1..1..0..0..1..1..0
..1..0..1..1..0..0..1....1..0..1..1..0..0..1....0..0..1..1..0..0..1
..0..1..1..0..0..1..1....0..1..1..0..1..1..0....1..1..0..0..1..1..0
..1..0..0..1..1..0..0....1..0..0..1..0..0..1....0..0..1..1..0..0..1
CROSSREFS
Sequence in context: A295529 A296737 A202810 * A238653 A041843 A041840
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 12 2012
STATUS
approved

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Last modified February 25 09:35 EST 2024. Contains 370313 sequences. (Running on oeis4.)