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A204300
Number of nX7 0..3 arrays with every element neighboring horizontally or vertically both a 0 and a 1, and 2 introduced before 3 in row major order
0
0, 776, 164112, 38262132, 17549848472, 5589659640640, 2168622256129656, 749141388620048272, 283903844662926128576, 102514076157660926553040
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A204301
LINKS
Table of n, a(n) for n=1..10.
EXAMPLE
Some solutions for n=3
..0..0..1..0..2..1..1....1..1..2..1..0..1..1....0..0..1..0..0..0..1
..1..0..1..0..0..0..0....0..0..0..1..0..3..0....1..1..1..0..1..1..1
..1..0..1..2..1..1..0....1..1..0..1..1..1..0....0..0..1..0..0..0..0
CROSSREFS
Sequence in context: A177845 A177843 A202893 * A043519 A043384 A237162
Adjacent sequences: A204297 A204298 A204299 * A204301 A204302 A204303
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 14 2012
STATUS
approved

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Last modified November 7 22:02 EST 2024. Contains 377536 sequences.
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