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A280672 Number of nX7 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. 1
224, 61880, 16438612, 4460317695, 1208240638772, 327452072560351, 88741877287328326, 24049810737844448684, 6517703746847251930646, 1766353341829714295007100, 478696830022637290656991583 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A280673.
LINKS
EXAMPLE
Some solutions for n=2
..0..0..1..1..0..0..1. .0..1..0..1..0..1..2. .0..1..0..1..0..2..2
..2..2..0..2..2..1..2. .2..2..1..2..1..2..1. .1..2..1..2..0..0..2
CROSSREFS
Cf. A280673.
Sequence in context: A051367 A280960 A076007 * A204977 A204704 A206649
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 07 2017
STATUS
approved

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)